811315535916 has 24 divisors (see below), whose sum is σ = 1893085584880. Its totient is φ = 270436226112.

The previous prime is 811315535887. The next prime is 811315535971. The reversal of 811315535916 is 619535513118.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1805130 + ... + 2209326.

Almost surely, 2^811315535916 is an apocalyptic number.

It is an amenable number.

811315535916 is an abundant number, since it is smaller than the sum of its proper divisors (1081770048964).

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

811315535916 is a wasteful number, since it uses less digits than its factorization.

811315535916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571473 (or 571471 counting only the distinct ones).

The product of its digits is 486000, while the sum is 48.

The spelling of 811315535916 in words is "eight hundred eleven billion, three hundred fifteen million, five hundred thirty-five thousand, nine hundred sixteen".