51791465660 has 24 divisors (see below), whose sum is σ = 118649540016. Its totient is φ = 18833260160.

The previous prime is 51791465641. The next prime is 51791465669. The reversal of 51791465660 is 6656419715.

It is a junction number, because it is equal to n+sod(n) for n = 51791465599 and 51791465608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51791465669) 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, 117707657 + ... + 117708096.

It is an arithmetic number, because the mean of its divisors is an integer number (4943730834).

Almost surely, 2^51791465660 is an apocalyptic number.

It is an amenable number.

51791465660 is an abundant number, since it is smaller than the sum of its proper divisors (66858074356).

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

51791465660 is a wasteful number, since it uses less digits than its factorization.

51791465660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235415773 (or 235415771 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 51791465660 in words is "fifty-one billion, seven hundred ninety-one million, four hundred sixty-five thousand, six hundred sixty".