513103644655 has 32 divisors (see below), whose sum is σ = 710726897664. Its totient is φ = 348325863936.

The previous prime is 513103644623. The next prime is 513103644667. The reversal of 513103644655 is 556446301315.

It is a cyclic number.

It is not a de Polignac number, because 513103644655 - 2⁵ = 513103644623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5771874 + ... + 5860096.

It is an arithmetic number, because the mean of its divisors is an integer number (22210215552).

Almost surely, 2^513103644655 is an apocalyptic number.

513103644655 is a deficient number, since it is larger than the sum of its proper divisors (197623253009).

513103644655 is a wasteful number, since it uses less digits than its factorization.

513103644655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89895.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 513103644655 in words is "five hundred thirteen billion, one hundred three million, six hundred forty-four thousand, six hundred fifty-five".