811265451252 has 24 divisors (see below), whose sum is σ = 1975255012416. Its totient is φ = 258664346688.

The previous prime is 811265451181. The next prime is 811265451263. The reversal of 811265451252 is 252154562118.

811265451252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×811265451252² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1469683513 + ... + 1469684064.

It is an arithmetic number, because the mean of its divisors is an integer number (82302292184).

Almost surely, 2^811265451252 is an apocalyptic number.

It is an amenable number.

811265451252 is an abundant number, since it is smaller than the sum of its proper divisors (1163989561164).

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

811265451252 is a wasteful number, since it uses less digits than its factorization.

811265451252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2939367607 (or 2939367605 counting only the distinct ones).

The product of its digits is 192000, while the sum is 42.

The spelling of 811265451252 in words is "eight hundred eleven billion, two hundred sixty-five million, four hundred fifty-one thousand, two hundred fifty-two".