80528734128 has 80 divisors (see below), whose sum is σ = 209234108160. Its totient is φ = 26688314112.

The previous prime is 80528734127. The next prime is 80528734157. The reversal of 80528734128 is 82143782508.

It is a super-2 number, since 2×80528734128² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (80528734127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6167575 + ... + 6180617.

It is an arithmetic number, because the mean of its divisors is an integer number (2615426352).

Almost surely, 2^80528734128 is an apocalyptic number.

It is an amenable number.

80528734128 is an abundant number, since it is smaller than the sum of its proper divisors (128705374032).

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

80528734128 is a wasteful number, since it uses less digits than its factorization.

80528734128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13786 (or 13780 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 48.

The spelling of 80528734128 in words is "eighty billion, five hundred twenty-eight million, seven hundred thirty-four thousand, one hundred twenty-eight".