51506045673 has 16 divisors (see below), whose sum is σ = 69653016576. Its totient is φ = 33848372880.

The previous prime is 51506045659. The next prime is 51506045677. The reversal of 51506045673 is 37654060515.

It is not a de Polignac number, because 51506045673 - 2⁶ = 51506045609 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 15 ways as a sum of consecutive naturals, for example, 1680936 + ... + 1711302.

It is an arithmetic number, because the mean of its divisors is an integer number (4353313536).

Almost surely, 2^51506045673 is an apocalyptic number.

It is an amenable number.

51506045673 is a deficient number, since it is larger than the sum of its proper divisors (18146970903).

51506045673 is a wasteful number, since it uses less digits than its factorization.

51506045673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38404.

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 51506045673 in words is "fifty-one billion, five hundred six million, forty-five thousand, six hundred seventy-three".