51722292816 has 30 divisors (see below), whose sum is σ = 144750583770. Its totient is φ = 17240764224.

The previous prime is 51722292757. The next prime is 51722292847. The reversal of 51722292816 is 61829222715.

It can be written as a sum of positive squares in only one way, i.e., 51710760000 + 11532816 = 227400^2 + 3396^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 179591151 + ... + 179591438.

It is an arithmetic number, because the mean of its divisors is an integer number (4825019459).

Almost surely, 2^51722292816 is an apocalyptic number.

It is an amenable number.

51722292816 is an abundant number, since it is smaller than the sum of its proper divisors (93028290954).

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

51722292816 is a wasteful number, since it uses less digits than its factorization.

51722292816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359182603 (or 359182594 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 51722292816 in words is "fifty-one billion, seven hundred twenty-two million, two hundred ninety-two thousand, eight hundred sixteen".