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80800008880 = 2451010000111
BaseRepresentation
bin100101101000000001…
…1100100101010110000
321201120002110201212111
41023100003210222300
52310434300241010
6101041412335104
75560204513003
oct1132003445260
9251502421774
1080800008880
11312a3553648
12137ab914494
137808abba56
143ca710753a
15217d84858a
hex12d00e4ab0

80800008880 has 20 divisors (see below), whose sum is σ = 187860020832. Its totient is φ = 32320003520.

The previous prime is 80800008871. The next prime is 80800008881. The reversal of 80800008880 is 8880000808.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (80800008881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504999976 + ... + 505000135.

Almost surely, 280800008880 is an apocalyptic number.

80800008880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80800008880 is an abundant number, since it is smaller than the sum of its proper divisors (107060011952).

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

80800008880 is a wasteful number, since it uses less digits than its factorization.

80800008880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010000124 (or 1010000118 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 40.

The spelling of 80800008880 in words is "eighty billion, eight hundred million, eight thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1010000111 2020000222 4040000444 5050000555 8080000888 10100001110 16160001776 20200002220 40400004440 80800008880