2656791372055 has 32 divisors (see below), whose sum is σ = 3553870023360. Its totient is φ = 1894848675840.

The previous prime is 2656791372043. The next prime is 2656791372071. The reversal of 2656791372055 is 5502731976562.

It is not a de Polignac number, because 2656791372055 - 2²¹ = 2656789274903 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11384907 + ... + 11615923.

It is an arithmetic number, because the mean of its divisors is an integer number (111058438230).

Almost surely, 2^{2656791372055} is an apocalyptic number.

2656791372055 is a deficient number, since it is larger than the sum of its proper divisors (897078651305).

2656791372055 is a wasteful number, since it uses less digits than its factorization.

2656791372055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238179.

The product of its (nonzero) digits is 23814000, while the sum is 58.

The spelling of 2656791372055 in words is "two trillion, six hundred fifty-six billion, seven hundred ninety-one million, three hundred seventy-two thousand, fifty-five".