2556106651151 has 4 divisors (see below), whose sum is σ = 2556308392704. Its totient is φ = 2555904909600.

The previous prime is 2556106651127. The next prime is 2556106651157. The reversal of 2556106651151 is 1511566016552.

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 2556106651151 - 2³⁴ = 2538926781967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2556106651157) 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, 100851770 + ... + 100877111.

It is an arithmetic number, because the mean of its divisors is an integer number (639077098176).

Almost surely, 2^{2556106651151} is an apocalyptic number.

2556106651151 is a deficient number, since it is larger than the sum of its proper divisors (201741553).

2556106651151 is a wasteful number, since it uses less digits than its factorization.

2556106651151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201741552.

The product of its (nonzero) digits is 270000, while the sum is 44.

The spelling of 2556106651151 in words is "two trillion, five hundred fifty-six billion, one hundred six million, six hundred fifty-one thousand, one hundred fifty-one".