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80783067960 = 23335724732479
BaseRepresentation
bin100101100111100001…
…0111100101100111000
321201111220121001022000
41023033002330230320
52310420431133320
6101040005301000
75556610514400
oct1131702745470
9251456531260
1080783067960
1131294a32691
12137a6104760
137805439b3a
143ca4b77800
15217c0edc90
hex12cf0bcb38

80783067960 has 384 divisors, whose sum is σ = 319915008000. Its totient is φ = 18071278848.

The previous prime is 80783067931. The next prime is 80783067973. The reversal of 80783067960 is 6976038708.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 80783067897 and 80783067906.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2471001 + ... + 2503479.

It is an arithmetic number, because the mean of its divisors is an integer number (833112000).

Almost surely, 280783067960 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 80783067960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159957504000).

80783067960 is an abundant number, since it is smaller than the sum of its proper divisors (239131940040).

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

80783067960 is a wasteful number, since it uses less digits than its factorization.

80783067960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32560 (or 32543 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 80783067960 in words is "eighty billion, seven hundred eighty-three million, sixty-seven thousand, nine hundred sixty".