811874620628 has 48 divisors (see below), whose sum is σ = 1462586146560. Its totient is φ = 394217241600.

The previous prime is 811874620597. The next prime is 811874620649. The reversal of 811874620628 is 826026478118.

It is a super-2 number, since 2×811874620628² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 811874620628.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4590968 + ... + 4764528.

It is an arithmetic number, because the mean of its divisors is an integer number (30470544720).

Almost surely, 2^811874620628 is an apocalyptic number.

It is an amenable number.

811874620628 is a deficient number, since it is larger than the sum of its proper divisors (650711525932).

811874620628 is a wasteful number, since it uses less digits than its factorization.

811874620628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173888 (or 173886 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 53.

The spelling of 811874620628 in words is "eight hundred eleven billion, eight hundred seventy-four million, six hundred twenty thousand, six hundred twenty-eight".