80813278242 has 24 divisors (see below), whose sum is σ = 175143986316. Its totient is φ = 26930290176.

The previous prime is 80813278181. The next prime is 80813278261. The reversal of 80813278242 is 24287231808.

80813278242 is a `hidden beast` number, since 8 + 0 + 81 + 327 + 8 + 242 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 72749417841 + 8063860401 = 269721^2 + 89799^2 .

It is a super-2 number, since 2×80813278242² (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 11 ways as a sum of consecutive naturals, for example, 555523 + ... + 685734.

Almost surely, 2^80813278242 is an apocalyptic number.

80813278242 is an abundant number, since it is smaller than the sum of its proper divisors (94330708074).

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

80813278242 is a wasteful number, since it uses less digits than its factorization.

80813278242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1244882 (or 1244879 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 45.

The spelling of 80813278242 in words is "eighty billion, eight hundred thirteen million, two hundred seventy-eight thousand, two hundred forty-two".