51397457622 has 16 divisors (see below), whose sum is σ = 117479903232. Its totient is φ = 14684987880.

The previous prime is 51397457557. The next prime is 51397457627. The reversal of 51397457622 is 22675479315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51397457627) 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, 611874454 + ... + 611874537.

It is an arithmetic number, because the mean of its divisors is an integer number (7342493952).

Almost surely, 2^51397457622 is an apocalyptic number.

51397457622 is an abundant number, since it is smaller than the sum of its proper divisors (66082445610).

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

51397457622 is a wasteful number, since it uses less digits than its factorization.

51397457622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223749003.

The product of its digits is 3175200, while the sum is 51.

The spelling of 51397457622 in words is "fifty-one billion, three hundred ninety-seven million, four hundred fifty-seven thousand, six hundred twenty-two".