56106066665 has 16 divisors (see below), whose sum is σ = 73513776960. Its totient is φ = 40767837120.

The previous prime is 56106066659. The next prime is 56106066673. The reversal of 56106066665 is 56666060165.

It is not a de Polignac number, because 56106066665 - 2²⁶ = 56038957801 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395195 + ... + 518064.

It is an arithmetic number, because the mean of its divisors is an integer number (4594611060).

Almost surely, 2^56106066665 is an apocalyptic number.

56106066665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56106066665 is a deficient number, since it is larger than the sum of its proper divisors (17407710295).

56106066665 is a wasteful number, since it uses less digits than its factorization.

56106066665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914392.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 56106066665 in words is "fifty-six billion, one hundred six million, sixty-six thousand, six hundred sixty-five".