2656565478287 has 16 divisors (see below), whose sum is σ = 3053088713472. Its totient is φ = 2264314288320.

The previous prime is 2656565478239. The next prime is 2656565478289. The reversal of 2656565478287 is 7828745656562.

It is not a de Polignac number, because 2656565478287 - 2¹² = 2656565474191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2656565478287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656565478289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 944483 + ... + 2491019.

It is an arithmetic number, because the mean of its divisors is an integer number (190818044592).

Almost surely, 2^{2656565478287} is an apocalyptic number.

2656565478287 is a deficient number, since it is larger than the sum of its proper divisors (396523235185).

2656565478287 is a wasteful number, since it uses less digits than its factorization.

2656565478287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547918.

The product of its digits is 1354752000, while the sum is 71.

The spelling of 2656565478287 in words is "two trillion, six hundred fifty-six billion, five hundred sixty-five million, four hundred seventy-eight thousand, two hundred eighty-seven".