51506045675 has 48 divisors (see below), whose sum is σ = 74295482880. Its totient is φ = 34688528640.

The previous prime is 51506045659. The next prime is 51506045677. The reversal of 51506045675 is 57654060515.

It is not a de Polignac number, because 51506045675 - 2⁴ = 51506045659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51506045677) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20576474 + ... + 20578976.

It is an arithmetic number, because the mean of its divisors is an integer number (1547822560).

Almost surely, 2^51506045675 is an apocalyptic number.

51506045675 is a deficient number, since it is larger than the sum of its proper divisors (22789437205).

51506045675 is a wasteful number, since it uses less digits than its factorization.

51506045675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572 (or 4567 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 44.

The spelling of 51506045675 in words is "fifty-one billion, five hundred six million, forty-five thousand, six hundred seventy-five".