656011500513 has 4 divisors (see below), whose sum is σ = 874682000688. Its totient is φ = 437341000340.

The previous prime is 656011500509. The next prime is 656011500559. The reversal of 656011500513 is 315005110656.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 656011500513 - 2² = 656011500509 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (656011500563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109335250083 + ... + 109335250088.

It is an arithmetic number, because the mean of its divisors is an integer number (218670500172).

Almost surely, 2^656011500513 is an apocalyptic number.

It is an amenable number.

656011500513 is a deficient number, since it is larger than the sum of its proper divisors (218670500175).

656011500513 is a wasteful number, since it uses less digits than its factorization.

656011500513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218670500174.

The product of its (nonzero) digits is 13500, while the sum is 33.

The spelling of 656011500513 in words is "six hundred fifty-six billion, eleven million, five hundred thousand, five hundred thirteen".