80523280520 has 64 divisors (see below), whose sum is σ = 191907992880. Its totient is φ = 30303092736.

The previous prime is 80523280517. The next prime is 80523280589. The reversal of 80523280520 is 2508232508.

It can be written as a sum of positive squares in 8 ways, for example, as 67925911876 + 12597368644 = 260626^2 + 112238^2 .

It is a super-2 number, since 2×80523280520² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1880792 + ... + 1923128.

Almost surely, 2^80523280520 is an apocalyptic number.

It is an amenable number.

80523280520 is an abundant number, since it is smaller than the sum of its proper divisors (111384712360).

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

80523280520 is a wasteful number, since it uses less digits than its factorization.

80523280520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45162 (or 45158 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The spelling of 80523280520 in words is "eighty billion, five hundred twenty-three million, two hundred eighty thousand, five hundred twenty".