51275236734 has 20 divisors (see below), whose sum is σ = 114894512304. Its totient is φ = 17091745524.

The previous prime is 51275236709. The next prime is 51275236763. The reversal of 51275236734 is 43763257215.

51275236734 is a `hidden beast` number, since 51 + 2 + 7 + 523 + 6 + 73 + 4 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51275236734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 158256742 + ... + 158257065.

Almost surely, 2^51275236734 is an apocalyptic number.

51275236734 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

51275236734 is an abundant number, since it is smaller than the sum of its proper divisors (63619275570).

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

51275236734 is a wasteful number, since it uses less digits than its factorization.

51275236734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316513821 (or 316513812 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 45.

The spelling of 51275236734 in words is "fifty-one billion, two hundred seventy-five million, two hundred thirty-six thousand, seven hundred thirty-four".