811389522207 has 32 divisors (see below), whose sum is σ = 1181594787840. Its totient is φ = 491171677920.

The previous prime is 811389522113. The next prime is 811389522211. The reversal of 811389522207 is 702225983118.

It is not a de Polignac number, because 811389522207 - 2⁸ = 811389521951 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811389522287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191228028 + ... + 191232270.

It is an arithmetic number, because the mean of its divisors is an integer number (36924837120).

Almost surely, 2^811389522207 is an apocalyptic number.

811389522207 is a deficient number, since it is larger than the sum of its proper divisors (370205265633).

811389522207 is a wasteful number, since it uses less digits than its factorization.

811389522207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9723.

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 811389522207 in words is "eight hundred eleven billion, three hundred eighty-nine million, five hundred twenty-two thousand, two hundred seven".