80857979262 has 12 divisors (see below), whose sum is σ = 175192288440. Its totient is φ = 26952659748.

The previous prime is 80857979233. The next prime is 80857979281. The reversal of 80857979262 is 26297975808.

It is a self number, because there is not a number n which added to its sum of digits gives 80857979262.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2246054962 + ... + 2246054997.

It is an arithmetic number, because the mean of its divisors is an integer number (14599357370).

Almost surely, 2^80857979262 is an apocalyptic number.

80857979262 is an abundant number, since it is smaller than the sum of its proper divisors (94334309178).

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

80857979262 is a wasteful number, since it uses less digits than its factorization.

80857979262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4492109967 (or 4492109964 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 80857979262 in words is "eighty billion, eight hundred fifty-seven million, nine hundred seventy-nine thousand, two hundred sixty-two".