512851878948 has 12 divisors (see below), whose sum is σ = 1196654384240. Its totient is φ = 170950626312.

The previous prime is 512851878937. The next prime is 512851878967. The reversal of 512851878948 is 849878158215.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21368828278 + ... + 21368828301.

Almost surely, 2^512851878948 is an apocalyptic number.

It is an amenable number.

512851878948 is an abundant number, since it is smaller than the sum of its proper divisors (683802505292).

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

512851878948 is a wasteful number, since it uses less digits than its factorization.

512851878948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42737656586 (or 42737656584 counting only the distinct ones).

The product of its digits is 51609600, while the sum is 66.

The spelling of 512851878948 in words is "five hundred twelve billion, eight hundred fifty-one million, eight hundred seventy-eight thousand, nine hundred forty-eight".