2556567433651 has 8 divisors (see below), whose sum is σ = 3187408748544. Its totient is φ = 1992130467720.

The previous prime is 2556567433643. The next prime is 2556567433663. The reversal of 2556567433651 is 1563347656552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2556567433651 - 2³ = 2556567433643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2556567433631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16601087155 + ... + 16601087308.

It is an arithmetic number, because the mean of its divisors is an integer number (398426093568).

Almost surely, 2^{2556567433651} is an apocalyptic number.

2556567433651 is a deficient number, since it is larger than the sum of its proper divisors (630841314893).

2556567433651 is a wasteful number, since it uses less digits than its factorization.

2556567433651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33202174481.

The product of its digits is 68040000, while the sum is 58.

The spelling of 2556567433651 in words is "two trillion, five hundred fifty-six billion, five hundred sixty-seven million, four hundred thirty-three thousand, six hundred fifty-one".