811772436101 has 16 divisors (see below), whose sum is σ = 916327650240. Its totient is φ = 712355777280.

The previous prime is 811772436077. The next prime is 811772436149. The reversal of 811772436101 is 101634277118.

It is not a de Polignac number, because 811772436101 - 2²² = 811768241797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811772436161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1027850 + ... + 1637076.

It is an arithmetic number, because the mean of its divisors is an integer number (57270478140).

Almost surely, 2^811772436101 is an apocalyptic number.

It is an amenable number.

811772436101 is a deficient number, since it is larger than the sum of its proper divisors (104555214139).

811772436101 is a wasteful number, since it uses less digits than its factorization.

811772436101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613444.

The product of its (nonzero) digits is 56448, while the sum is 41.

The spelling of 811772436101 in words is "eight hundred eleven billion, seven hundred seventy-two million, four hundred thirty-six thousand, one hundred one".