51566004065 has 8 divisors (see below), whose sum is σ = 62224899840. Its totient is φ = 41022339952.

The previous prime is 51566004019. The next prime is 51566004067. The reversal of 51566004065 is 56040066515.

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 51566004065 - 2⁸ = 51566003809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51566004067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28806929 + ... + 28808718.

It is an arithmetic number, because the mean of its divisors is an integer number (7778112480).

Almost surely, 2^51566004065 is an apocalyptic number.

It is an amenable number.

51566004065 is a deficient number, since it is larger than the sum of its proper divisors (10658895775).

51566004065 is a wasteful number, since it uses less digits than its factorization.

51566004065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57615831.

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 51566004065 in words is "fifty-one billion, five hundred sixty-six million, four thousand, sixty-five".