811045072125 has 160 divisors (see below), whose sum is σ = 1567635189120. Its totient is φ = 416905056000.

The previous prime is 811045072099. The next prime is 811045072133. The reversal of 811045072125 is 521270540118.

It is a happy number.

811045072125 is a `hidden beast` number, since 8 + 1 + 10 + 450 + 72 + 125 = 666.

It is not a de Polignac number, because 811045072125 - 2⁵ = 811045072093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 811045072125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 34443606 + ... + 34467144.

It is an arithmetic number, because the mean of its divisors is an integer number (9797719932).

Almost surely, 2^811045072125 is an apocalyptic number.

It is an amenable number.

811045072125 is a deficient number, since it is larger than the sum of its proper divisors (756590116995).

811045072125 is a wasteful number, since it uses less digits than its factorization.

811045072125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23690 (or 23671 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The spelling of 811045072125 in words is "eight hundred eleven billion, forty-five million, seventy-two thousand, one hundred twenty-five".