811513440108 has 72 divisors (see below), whose sum is σ = 2356272670752. Its totient is φ = 230684009472.

The previous prime is 811513440103. The next prime is 811513440113. The reversal of 811513440108 is 801044315118.

811513440108 is a `hidden beast` number, since 8 + 115 + 134 + 401 + 0 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (811513440103) and next prime (811513440113).

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

It is not an unprimeable number, because it can be changed into a prime (811513440103) 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, 8123685 + ... + 8222972.

It is an arithmetic number, because the mean of its divisors is an integer number (32726009316).

Almost surely, 2^811513440108 is an apocalyptic number.

It is an amenable number.

811513440108 is an abundant number, since it is smaller than the sum of its proper divisors (1544759230644).

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

811513440108 is a wasteful number, since it uses less digits than its factorization.

811513440108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16346871 (or 16346866 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The spelling of 811513440108 in words is "eight hundred eleven billion, five hundred thirteen million, four hundred forty thousand, one hundred eight".