51646622622622 has 16 divisors (see below), whose sum is σ = 77864884100640. Its totient is φ = 25691925349728.

The previous prime is 51646622622607. The next prime is 51646622622667. The reversal of 51646622622622 is 22622622664615.

It is a self number, because there is not a number n which added to its sum of digits gives 51646622622622.

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, 65631873 + ... + 66414124.

It is an arithmetic number, because the mean of its divisors is an integer number (4866555256290).

Almost surely, 2^{51646622622622} is an apocalyptic number.

51646622622622 is a deficient number, since it is larger than the sum of its proper divisors (26218261478018).

51646622622622 is a wasteful number, since it uses less digits than its factorization.

51646622622622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132046995.

The product of its digits is 9953280, while the sum is 52.

The spelling of 51646622622622 in words is "fifty-one trillion, six hundred forty-six billion, six hundred twenty-two million, six hundred twenty-two thousand, six hundred twenty-two".