56605970065 has 16 divisors (see below), whose sum is σ = 71929831248. Its totient is φ = 42616846336.

The previous prime is 56605970051. The next prime is 56605970081. The reversal of 56605970065 is 56007950665.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3167325841 + 53438644224 = 56279^2 + 231168^2 .

It is a cyclic number.

It is not a de Polignac number, because 56605970065 - 2⁵ = 56605970033 is a prime.

It is a super-2 number, since 2×56605970065² (a number of 22 digits) contains 22 as substring.

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, 1075299 + ... + 1126711.

It is an arithmetic number, because the mean of its divisors is an integer number (4495614453).

Almost surely, 2^56605970065 is an apocalyptic number.

It is an amenable number.

56605970065 is a deficient number, since it is larger than the sum of its proper divisors (15323861183).

56605970065 is a wasteful number, since it uses less digits than its factorization.

56605970065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64388.

The product of its (nonzero) digits is 1701000, while the sum is 49.

The spelling of 56605970065 in words is "fifty-six billion, six hundred five million, nine hundred seventy thousand, sixty-five".