80857779462 has 48 divisors (see below), whose sum is σ = 177355262448. Its totient is φ = 26619955200.

The previous prime is 80857779427. The next prime is 80857779469. The reversal of 80857779462 is 26497775808.

It is a self number, because there is not a number n which added to its sum of digits gives 80857779462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80857779469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7167058 + ... + 7178330.

It is an arithmetic number, because the mean of its divisors is an integer number (3694901301).

Almost surely, 2^80857779462 is an apocalyptic number.

80857779462 is an abundant number, since it is smaller than the sum of its proper divisors (96497482986).

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

80857779462 is a wasteful number, since it uses less digits than its factorization.

80857779462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16165 (or 16162 counting only the distinct ones).

The product of its (nonzero) digits is 47416320, while the sum is 63.

The spelling of 80857779462 in words is "eighty billion, eight hundred fifty-seven million, seven hundred seventy-nine thousand, four hundred sixty-two".