80507171555 has 4 divisors (see below), whose sum is σ = 96608605872. Its totient is φ = 64405737240.

The previous prime is 80507171513. The next prime is 80507171579. The reversal of 80507171555 is 55517170508.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 80507171555 - 2²⁸ = 80238736099 is a prime.

It is a super-3 number, since 3×80507171555³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8050717151 + ... + 8050717160.

It is an arithmetic number, because the mean of its divisors is an integer number (24152151468).

Almost surely, 2^80507171555 is an apocalyptic number.

80507171555 is a deficient number, since it is larger than the sum of its proper divisors (16101434317).

80507171555 is a wasteful number, since it uses less digits than its factorization.

80507171555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16101434316.

The product of its (nonzero) digits is 245000, while the sum is 44.

The spelling of 80507171555 in words is "eighty billion, five hundred seven million, one hundred seventy-one thousand, five hundred fifty-five".