80509128526 has 16 divisors (see below), whose sum is σ = 127133804160. Its totient is φ = 38131664760.

The previous prime is 80509128517. The next prime is 80509128593. The reversal of 80509128526 is 62582190508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243055 + ... + 469141.

It is an arithmetic number, because the mean of its divisors is an integer number (7945862760).

Almost surely, 2^80509128526 is an apocalyptic number.

80509128526 is a deficient number, since it is larger than the sum of its proper divisors (46624675634).

80509128526 is a wasteful number, since it uses less digits than its factorization.

80509128526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235479.

The product of its (nonzero) digits is 345600, while the sum is 46.

The spelling of 80509128526 in words is "eighty billion, five hundred nine million, one hundred twenty-eight thousand, five hundred twenty-six".