810311943952 has 30 divisors (see below), whose sum is σ = 1826302559118. Its totient is φ = 347276547072.

The previous prime is 810311943949. The next prime is 810311943953. The reversal of 810311943952 is 259349113018.

It can be written as a sum of positive squares in only one way, i.e., 608175380736 + 202136563216 = 779856^2 + 449596^2 .

It is a super-2 number, since 2×810311943952² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (810311943953) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 516779793 + ... + 516781360.

Almost surely, 2^810311943952 is an apocalyptic number.

It is an amenable number.

810311943952 is an abundant number, since it is smaller than the sum of its proper divisors (1015990615166).

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

810311943952 is a wasteful number, since it uses less digits than its factorization.

810311943952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033561175 (or 1033561162 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 810311943952 in words is "eight hundred ten billion, three hundred eleven million, nine hundred forty-three thousand, nine hundred fifty-two".