6656106556051 has 4 divisors (see below), whose sum is σ = 6685428611592. Its totient is φ = 6626784500512.

The previous prime is 6656106556013. The next prime is 6656106556079. The reversal of 6656106556051 is 1506556016566.

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 6656106556051 - 2²⁵ = 6656073001619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6656106556051.

It is not an unprimeable number, because it can be changed into a prime (6656106551051) 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, 14661027430 + ... + 14661027883.

It is an arithmetic number, because the mean of its divisors is an integer number (1671357152898).

Almost surely, 2^{6656106556051} is an apocalyptic number.

6656106556051 is a deficient number, since it is larger than the sum of its proper divisors (29322055541).

6656106556051 is a wasteful number, since it uses less digits than its factorization.

6656106556051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29322055540.

The product of its (nonzero) digits is 4860000, while the sum is 52.

The spelling of 6656106556051 in words is "six trillion, six hundred fifty-six billion, one hundred six million, five hundred fifty-six thousand, fifty-one".