56065666550 has 12 divisors (see below), whose sum is σ = 104282139876. Its totient is φ = 22426266600.

The previous prime is 56065666549. The next prime is 56065666561. The reversal of 56065666550 is 5566656065.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 1121313331 = 56065666550 / (5 + 6 + 0 + 6 + 5 + 6 + 6 + 6 + 5 + 5 + 0).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 560656616 + ... + 560656715.

It is an arithmetic number, because the mean of its divisors is an integer number (8690178323).

Almost surely, 2^56065666550 is an apocalyptic number.

56065666550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

56065666550 is a deficient number, since it is larger than the sum of its proper divisors (48216473326).

56065666550 is a wasteful number, since it uses less digits than its factorization.

56065666550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121313343 (or 1121313338 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 50.

The spelling of 56065666550 in words is "fifty-six billion, sixty-five million, six hundred sixty-six thousand, five hundred fifty".