2656504051655 has 16 divisors (see below), whose sum is σ = 3381072982560. Its totient is φ = 1996783767552.

The previous prime is 2656504051603. The next prime is 2656504051679. The reversal of 2656504051655 is 5561504056562.

It is a cyclic number.

It is not a de Polignac number, because 2656504051655 - 2¹² = 2656504047559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26571050 + ... + 26670839.

It is an arithmetic number, because the mean of its divisors is an integer number (211317061410).

Almost surely, 2^{2656504051655} is an apocalyptic number.

2656504051655 is a deficient number, since it is larger than the sum of its proper divisors (724568930905).

2656504051655 is a wasteful number, since it uses less digits than its factorization.

2656504051655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53242498.

The product of its (nonzero) digits is 5400000, while the sum is 50.

The spelling of 2656504051655 in words is "two trillion, six hundred fifty-six billion, five hundred four million, fifty-one thousand, six hundred fifty-five".