51442262874 has 24 divisors (see below), whose sum is σ = 111512187540. Its totient is φ = 17139120768.

The previous prime is 51442262863. The next prime is 51442262881. The reversal of 51442262874 is 47826224415.

51442262874 is a `hidden beast` number, since 5 + 14 + 4 + 2 + 2 + 628 + 7 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 48971477025 + 2470785849 = 221295^2 + 49707^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 653407 + ... + 727890.

Almost surely, 2^51442262874 is an apocalyptic number.

51442262874 is an abundant number, since it is smaller than the sum of its proper divisors (60069924666).

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

51442262874 is a wasteful number, since it uses less digits than its factorization.

51442262874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383374 (or 1383371 counting only the distinct ones).

The product of its digits is 860160, while the sum is 45.

The spelling of 51442262874 in words is "fifty-one billion, four hundred forty-two million, two hundred sixty-two thousand, eight hundred seventy-four".