513344642656 has 12 divisors (see below), whose sum is σ = 1010647265292. Its totient is φ = 256672321312.

The previous prime is 513344642651. The next prime is 513344642659. The reversal of 513344642656 is 656246443315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513344642651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8021010010 + ... + 8021010073.

It is an arithmetic number, because the mean of its divisors is an integer number (84220605441).

Almost surely, 2^513344642656 is an apocalyptic number.

It is an amenable number.

513344642656 is a deficient number, since it is larger than the sum of its proper divisors (497302622636).

513344642656 is a wasteful number, since it uses less digits than its factorization.

513344642656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16042020093 (or 16042020085 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 49.

The spelling of 513344642656 in words is "five hundred thirteen billion, three hundred forty-four million, six hundred forty-two thousand, six hundred fifty-six".