512399171872 has 48 divisors (see below), whose sum is σ = 1203024154752. Its totient is φ = 210051832320.

The previous prime is 512399171863. The next prime is 512399171881. The reversal of 512399171872 is 278171993215.

It is an interprime number because it is at equal distance from previous prime (512399171863) and next prime (512399171881).

It is a super-2 number, since 2×512399171872² (a number of 24 digits) contains 22 as substring.

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, 49723029 + ... + 49733332.

It is an arithmetic number, because the mean of its divisors is an integer number (25063003224).

Almost surely, 2^512399171872 is an apocalyptic number.

It is an amenable number.

512399171872 is an abundant number, since it is smaller than the sum of its proper divisors (690624982880).

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

512399171872 is a wasteful number, since it uses less digits than its factorization.

512399171872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99456401 (or 99456393 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 55.

The spelling of 512399171872 in words is "five hundred twelve billion, three hundred ninety-nine million, one hundred seventy-one thousand, eight hundred seventy-two".