51660055566044 has 24 divisors (see below), whose sum is σ = 92111232030048. Its totient is φ = 25342564703040.

The previous prime is 51660055566011. The next prime is 51660055566103. The reversal of 51660055566044 is 44066555006615.

It is a super-2 number, since 2×51660055566044² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88507649 + ... + 89089415.

It is an arithmetic number, because the mean of its divisors is an integer number (3837968001252).

Almost surely, 2^{51660055566044} is an apocalyptic number.

It is an amenable number.

51660055566044 is a deficient number, since it is larger than the sum of its proper divisors (40451176464004).

51660055566044 is a wasteful number, since it uses less digits than its factorization.

51660055566044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000685 (or 1000683 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 53.

The spelling of 51660055566044 in words is "fifty-one trillion, six hundred sixty billion, fifty-five million, five hundred sixty-six thousand, forty-four".