80812812492 has 36 divisors (see below), whose sum is σ = 204291196200. Its totient is φ = 26935709952.

The previous prime is 80812812473. The next prime is 80812812497. The reversal of 80812812492 is 29421821808.

80812812492 is a `hidden beast` number, since 8 + 0 + 81 + 2 + 81 + 2 + 492 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (80812812497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 497884 + ... + 639932.

It is an arithmetic number, because the mean of its divisors is an integer number (5674755450).

Almost surely, 2^80812812492 is an apocalyptic number.

It is an amenable number.

80812812492 is an abundant number, since it is smaller than the sum of its proper divisors (123478383708).

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

80812812492 is a wasteful number, since it uses less digits than its factorization.

80812812492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157862 (or 157857 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The spelling of 80812812492 in words is "eighty billion, eight hundred twelve million, eight hundred twelve thousand, four hundred ninety-two".