51564444556222 has 128 divisors (see below), whose sum is σ = 90313492147200. Its totient is φ = 21879835084800.

The previous prime is 51564444556211. The next prime is 51564444556283. The reversal of 51564444556222 is 22265544446515.

It is a super-3 number, since 3×51564444556222³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3245284054 + ... + 3245299942.

It is an arithmetic number, because the mean of its divisors is an integer number (705574157400).

Almost surely, 2^{51564444556222} is an apocalyptic number.

51564444556222 is a deficient number, since it is larger than the sum of its proper divisors (38749047590978).

51564444556222 is a wasteful number, since it uses less digits than its factorization.

51564444556222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17442.

The product of its digits is 46080000, while the sum is 55.

The spelling of 51564444556222 in words is "fifty-one trillion, five hundred sixty-four billion, four hundred forty-four million, five hundred fifty-six thousand, two hundred twenty-two".