51394806675 has 144 divisors (see below), whose sum is σ = 99582912000. Its totient is φ = 25255722240.

The previous prime is 51394806569. The next prime is 51394806703. The reversal of 51394806675 is 57660849315.

51394806675 is a `hidden beast` number, since 5 + 1 + 39 + 480 + 66 + 75 = 666.

It is not a de Polignac number, because 51394806675 - 2¹⁷ = 51394675603 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 35964861 + ... + 35966289.

It is an arithmetic number, because the mean of its divisors is an integer number (691548000).

Almost surely, 2^51394806675 is an apocalyptic number.

51394806675 is a deficient number, since it is larger than the sum of its proper divisors (48188105325).

51394806675 is a wasteful number, since it uses less digits than its factorization.

51394806675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690 (or 1682 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 51394806675 in words is "fifty-one billion, three hundred ninety-four million, eight hundred six thousand, six hundred seventy-five".