556953808359655 has 64 divisors (see below), whose sum is σ = 775941486566400. Its totient is φ = 375904548264960.

The previous prime is 556953808359653. The next prime is 556953808359673.

556953808359655 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 556953808359655 - 2¹ = 556953808359653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556953808359653) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 657923401 + ... + 658769389.

It is an arithmetic number, because the mean of its divisors is an integer number (12124085727600).

Almost surely, 2^{556953808359655} is an apocalyptic number.

556953808359655 is a deficient number, since it is larger than the sum of its proper divisors (218987678206745).

556953808359655 is a wasteful number, since it uses less digits than its factorization.

556953808359655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847304.

The product of its (nonzero) digits is 26244000000, while the sum is 82.

The spelling of 556953808359655 in words is "five hundred fifty-six trillion, nine hundred fifty-three billion, eight hundred eight million, three hundred fifty-nine thousand, six hundred fifty-five".