51564195222 has 16 divisors (see below), whose sum is σ = 103132166592. Its totient is φ = 17187435720.

The previous prime is 51564195203. The next prime is 51564195223. The reversal of 51564195222 is 22259146515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51564195223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39033 + ... + 323499.

It is an arithmetic number, because the mean of its divisors is an integer number (6445760412).

Almost surely, 2^51564195222 is an apocalyptic number.

51564195222 is an abundant number, since it is smaller than the sum of its proper divisors (51567971370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51564195222 is a wasteful number, since it uses less digits than its factorization.

51564195222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314683.

The product of its digits is 216000, while the sum is 42.

The spelling of 51564195222 in words is "fifty-one billion, five hundred sixty-four million, one hundred ninety-five thousand, two hundred twenty-two".