51207755706 has 24 divisors (see below), whose sum is σ = 111102779424. Its totient is φ = 17045768520.

The previous prime is 51207755671. The next prime is 51207755723. The reversal of 51207755706 is 60755770215.

It is a happy number.

51207755706 is a `hidden beast` number, since 5 + 1 + 2 + 0 + 7 + 75 + 570 + 6 = 666.

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, 1943500 + ... + 1969671.

It is an arithmetic number, because the mean of its divisors is an integer number (4629282476).

Almost surely, 2^51207755706 is an apocalyptic number.

51207755706 is an abundant number, since it is smaller than the sum of its proper divisors (59895023718).

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

51207755706 is a wasteful number, since it uses less digits than its factorization.

51207755706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3913906 (or 3913903 counting only the distinct ones).

The product of its (nonzero) digits is 514500, while the sum is 45.

The spelling of 51207755706 in words is "fifty-one billion, two hundred seven million, seven hundred fifty-five thousand, seven hundred six".