512638891793 has 16 divisors (see below), whose sum is σ = 625825854720. Its totient is φ = 409897614336.

The previous prime is 512638891729. The next prime is 512638891819. The reversal of 512638891793 is 397198836215.

It is not a de Polignac number, because 512638891793 - 2⁶ = 512638891729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (512638591793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19048013 + ... + 19074906.

It is an arithmetic number, because the mean of its divisors is an integer number (39114115920).

Almost surely, 2^512638891793 is an apocalyptic number.

It is an amenable number.

512638891793 is a deficient number, since it is larger than the sum of its proper divisors (113186962927).

512638891793 is a wasteful number, since it uses less digits than its factorization.

512638891793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38123056.

The product of its digits is 19595520, while the sum is 62.

The spelling of 512638891793 in words is "five hundred twelve billion, six hundred thirty-eight million, eight hundred ninety-one thousand, seven hundred ninety-three".