811298061936 has 120 divisors (see below), whose sum is σ = 2493106774704. Its totient is φ = 254524861440.

The previous prime is 811298061883. The next prime is 811298061949. The reversal of 811298061936 is 639160892118.

811298061936 is a `hidden beast` number, since 8 + 1 + 12 + 9 + 8 + 0 + 619 + 3 + 6 = 666.

It is a super-2 number, since 2×811298061936² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6071175 + ... + 6203366.

Almost surely, 2^811298061936 is an apocalyptic number.

It is an amenable number.

811298061936 is an abundant number, since it is smaller than the sum of its proper divisors (1681808712768).

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

811298061936 is a wasteful number, since it uses less digits than its factorization.

811298061936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12274581 (or 12274563 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The spelling of 811298061936 in words is "eight hundred eleven billion, two hundred ninety-eight million, sixty-one thousand, nine hundred thirty-six".