811232030556 has 36 divisors (see below), whose sum is σ = 2051170206904. Its totient is φ = 270337370400.

The previous prime is 811232030551. The next prime is 811232030563. The reversal of 811232030556 is 655030232118.

811232030556 is a `hidden beast` number, since 81 + 1 + 2 + 3 + 20 + 3 + 0 + 556 = 666.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 811232030556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811232030551) 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, 2919715 + ... + 3185466.

Almost surely, 2^811232030556 is an apocalyptic number.

It is an amenable number.

811232030556 is an abundant number, since it is smaller than the sum of its proper divisors (1239938176348).

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

811232030556 is a wasteful number, since it uses less digits than its factorization.

811232030556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6108882 (or 6108877 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 811232030556 in words is "eight hundred eleven billion, two hundred thirty-two million, thirty thousand, five hundred fifty-six".