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80488947328 = 2719916571907
BaseRepresentation
bin100101011110110000…
…0111101111010000000
321200202102011011122021
41022331200331322000
52304320132303303
6100550501251224
75546406523006
oct1127540757200
9250672134567
1080488947328
1131153a04489
1213723703b14
13778951a16a
143c77a94a76
1521613a1ebd
hex12bd83de80

80488947328 has 64 divisors (see below), whose sum is σ = 161336664000. Its totient is φ = 39997089792.

The previous prime is 80488947323. The next prime is 80488947421. The reversal of 80488947328 is 82374988408.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (80488947323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42206151 + ... + 42208057.

It is an arithmetic number, because the mean of its divisors is an integer number (2520885375).

Almost surely, 280488947328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80488947328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80668332000).

80488947328 is an abundant number, since it is smaller than the sum of its proper divisors (80847716672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80488947328 is a wasteful number, since it uses less digits than its factorization.

80488947328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777 (or 3765 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 61.

The spelling of 80488947328 in words is "eighty billion, four hundred eighty-eight million, nine hundred forty-seven thousand, three hundred twenty-eight".

Divisors: 1 2 4 8 16 32 64 128 199 398 796 1592 1657 1907 3184 3314 3814 6368 6628 7628 12736 13256 15256 25472 26512 30512 53024 61024 106048 122048 212096 244096 329743 379493 659486 758986 1318972 1517972 2637944 3035944 3159899 5275888 6071888 6319798 10551776 12143776 12639596 21103552 24287552 25279192 42207104 48575104 50558384 101116768 202233536 404467072 628819901 1257639802 2515279604 5030559208 10061118416 20122236832 40244473664 80488947328