51660820552774 has 16 divisors (see below), whose sum is σ = 82049703397200. Its totient is φ = 24310925526784.

The previous prime is 51660820552711. The next prime is 51660820552793. The reversal of 51660820552774 is 47725502806615.

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, 20070717 + ... + 22497895.

It is an arithmetic number, because the mean of its divisors is an integer number (5128106462325).

Almost surely, 2^{51660820552774} is an apocalyptic number.

51660820552774 is a deficient number, since it is larger than the sum of its proper divisors (30388882844426).

51660820552774 is a wasteful number, since it uses less digits than its factorization.

51660820552774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3053207.

The product of its (nonzero) digits is 28224000, while the sum is 58.

The spelling of 51660820552774 in words is "fifty-one trillion, six hundred sixty billion, eight hundred twenty million, five hundred fifty-two thousand, seven hundred seventy-four".