51465383678660 has 96 divisors (see below), whose sum is σ = 130020013347840. Its totient is φ = 16716292645248.

The previous prime is 51465383678593. The next prime is 51465383678671. The reversal of 51465383678660 is 6687638356415.

It is a super-2 number, since 2×51465383678660² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205405019 + ... + 205655421.

It is an arithmetic number, because the mean of its divisors is an integer number (1354375139040).

Almost surely, 2^{51465383678660} is an apocalyptic number.

It is an amenable number.

51465383678660 is an abundant number, since it is smaller than the sum of its proper divisors (78554629669180).

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

51465383678660 is a wasteful number, since it uses less digits than its factorization.

51465383678660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327705 (or 327703 counting only the distinct ones).

The product of its (nonzero) digits is 522547200, while the sum is 68.

The spelling of 51465383678660 in words is "fifty-one trillion, four hundred sixty-five billion, three hundred eighty-three million, six hundred seventy-eight thousand, six hundred sixty".