51668622532618 has 16 divisors (see below), whose sum is σ = 95388226214400. Its totient is φ = 20440334188656.

The previous prime is 51668622532577. The next prime is 51668622532619. The reversal of 51668622532618 is 81623522686615.

It is not an unprimeable number, because it can be changed into a prime (51668622532619) 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, 141946765018 + ... + 141946765381.

It is an arithmetic number, because the mean of its divisors is an integer number (5961764138400).

Almost surely, 2^{51668622532618} is an apocalyptic number.

51668622532618 is a deficient number, since it is larger than the sum of its proper divisors (43719603681782).

51668622532618 is a wasteful number, since it uses less digits than its factorization.

51668622532618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283893530421.

The product of its digits is 49766400, while the sum is 61.

The spelling of 51668622532618 in words is "fifty-one trillion, six hundred sixty-eight billion, six hundred twenty-two million, five hundred thirty-two thousand, six hundred eighteen".