51722020383700 has 18 divisors (see below), whose sum is σ = 112236784232846. Its totient is φ = 20688808153440.

The previous prime is 51722020383623. The next prime is 51722020383757. The reversal of 51722020383700 is 738302022715.

It can be written as a sum of positive squares in 3 ways, for example, as 13869576259344 + 37852444124356 = 3724188^2 + 6152434^2 .

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, 258610101819 + ... + 258610102018.

Almost surely, 2^{51722020383700} is an apocalyptic number.

51722020383700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51722020383700 is an abundant number, since it is smaller than the sum of its proper divisors (60514763849146).

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

51722020383700 is a wasteful number, since it uses less digits than its factorization.

51722020383700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517220203851 (or 517220203844 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 51722020383700 in words is "fifty-one trillion, seven hundred twenty-two billion, twenty million, three hundred eighty-three thousand, seven hundred".