51793297656 has 64 divisors (see below), whose sum is σ = 137139091200. Its totient is φ = 16244233728.

The previous prime is 51793297651. The next prime is 51793297657. The reversal of 51793297656 is 65679239715.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 51793297656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51793297651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1584405 + ... + 1616763.

It is an arithmetic number, because the mean of its divisors is an integer number (2142798300).

Almost surely, 2^51793297656 is an apocalyptic number.

It is an amenable number.

51793297656 is an abundant number, since it is smaller than the sum of its proper divisors (85345793544).

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

51793297656 is a wasteful number, since it uses less digits than its factorization.

51793297656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36308 (or 36304 counting only the distinct ones).

The product of its digits is 21432600, while the sum is 60.

The spelling of 51793297656 in words is "fifty-one billion, seven hundred ninety-three million, two hundred ninety-seven thousand, six hundred fifty-six".