51722404377 has 24 divisors (see below), whose sum is σ = 82390689216. Its totient is φ = 28756855008.

The previous prime is 51722404369. The next prime is 51722404411. The reversal of 51722404377 is 77340422715.

It is not a de Polignac number, because 51722404377 - 2³ = 51722404369 is a prime.

It is a super-2 number, since 2×51722404377² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51722404277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4749333 + ... + 4760210.

It is an arithmetic number, because the mean of its divisors is an integer number (3432945384).

Almost surely, 2^51722404377 is an apocalyptic number.

It is an amenable number.

51722404377 is a deficient number, since it is larger than the sum of its proper divisors (30668284839).

51722404377 is a wasteful number, since it uses less digits than its factorization.

51722404377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9509597 (or 9509590 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 42.

The spelling of 51722404377 in words is "fifty-one billion, seven hundred twenty-two million, four hundred four thousand, three hundred seventy-seven".