51373558464786 has 12 divisors (see below), whose sum is σ = 111309376673742. Its totient is φ = 17124519488256.

The previous prime is 51373558464779. The next prime is 51373558464791. The reversal of 51373558464786 is 68746485537315.

51373558464786 is a `hidden beast` number, since 5 + 1 + 3 + 7 + 3 + 558 + 4 + 64 + 7 + 8 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28498717419561 + 22874841045225 = 5338419^2 + 4782765^2 .

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a Curzon 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, 1427043290671 + ... + 1427043290706.

Almost surely, 2^{51373558464786} is an apocalyptic number.

51373558464786 is an abundant number, since it is smaller than the sum of its proper divisors (59935818208956).

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

51373558464786 is a wasteful number, since it uses less digits than its factorization.

51373558464786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854086581385 (or 2854086581382 counting only the distinct ones).

The product of its digits is 2032128000, while the sum is 72.

The spelling of 51373558464786 in words is "fifty-one trillion, three hundred seventy-three billion, five hundred fifty-eight million, four hundred sixty-four thousand, seven hundred eighty-six".