51564404022 has 8 divisors (see below), whose sum is σ = 103128808056. Its totient is φ = 17188134672.

The previous prime is 51564404009. The next prime is 51564404069. The reversal of 51564404022 is 22040446515.

It is a sphenic number, since it is the product of 3 distinct primes.

51564404022 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4297033663 + ... + 4297033674.

It is an arithmetic number, because the mean of its divisors is an integer number (12891101007).

Almost surely, 2^51564404022 is an apocalyptic number.

51564404022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51564404022 is a wasteful number, since it uses less digits than its factorization.

51564404022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8594067342.

The product of its (nonzero) digits is 38400, while the sum is 33.

The spelling of 51564404022 in words is "fifty-one billion, five hundred sixty-four million, four hundred four thousand, twenty-two".