2556614463851 has 4 divisors (see below), whose sum is σ = 2921845101552. Its totient is φ = 2191383826152.

The previous prime is 2556614463761. The next prime is 2556614463859. The reversal of 2556614463851 is 1583644166552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2556614463851 - 2²⁶ = 2556547354987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556614463859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182615318840 + ... + 182615318853.

It is an arithmetic number, because the mean of its divisors is an integer number (730461275388).

Almost surely, 2^{2556614463851} is an apocalyptic number.

2556614463851 is a deficient number, since it is larger than the sum of its proper divisors (365230637701).

2556614463851 is an equidigital number, since it uses as much as digits as its factorization.

2556614463851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365230637700.

The product of its digits is 20736000, while the sum is 56.

The spelling of 2556614463851 in words is "two trillion, five hundred fifty-six billion, six hundred fourteen million, four hundred sixty-three thousand, eight hundred fifty-one".