656055251579 has 32 divisors (see below), whose sum is σ = 892121610240. Its totient is φ = 467301745152.

The previous prime is 656055251567. The next prime is 656055251587. The reversal of 656055251579 is 975152550656.

It is a cyclic number.

It is not a de Polignac number, because 656055251579 - 2¹² = 656055247483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656055251279) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9183599 + ... + 9254760.

It is an arithmetic number, because the mean of its divisors is an integer number (27878800320).

Almost surely, 2^656055251579 is an apocalyptic number.

656055251579 is a deficient number, since it is larger than the sum of its proper divisors (236066358661).

656055251579 is a wasteful number, since it uses less digits than its factorization.

656055251579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18438419.

The product of its (nonzero) digits is 14175000, while the sum is 56.

The spelling of 656055251579 in words is "six hundred fifty-six billion, fifty-five million, two hundred fifty-one thousand, five hundred seventy-nine".