51797453180 has 24 divisors (see below), whose sum is σ = 118663256880. Its totient is φ = 18835437440.

The previous prime is 51797453177. The next prime is 51797453189. The reversal of 51797453180 is 8135479715.

It is a happy number.

It is a super-2 number, since 2×51797453180² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51797453189) 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, 117721265 + ... + 117721704.

It is an arithmetic number, because the mean of its divisors is an integer number (4944302370).

Almost surely, 2^51797453180 is an apocalyptic number.

It is an amenable number.

51797453180 is an abundant number, since it is smaller than the sum of its proper divisors (66865803700).

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

51797453180 is a wasteful number, since it uses less digits than its factorization.

51797453180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235442989 (or 235442987 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 50.

The spelling of 51797453180 in words is "fifty-one billion, seven hundred ninety-seven million, four hundred fifty-three thousand, one hundred eighty".