51506875671 has 32 divisors (see below), whose sum is σ = 72958996992. Its totient is φ = 32252204160.

The previous prime is 51506875649. The next prime is 51506875699. The reversal of 51506875671 is 17657860515.

It is not a de Polignac number, because 51506875671 - 2¹³ = 51506867479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51506075671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2570136 + ... + 2590098.

It is an arithmetic number, because the mean of its divisors is an integer number (2279968656).

Almost surely, 2^51506875671 is an apocalyptic number.

51506875671 is a deficient number, since it is larger than the sum of its proper divisors (21452121321).

51506875671 is a wasteful number, since it uses less digits than its factorization.

51506875671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20663.

The product of its (nonzero) digits is 1764000, while the sum is 51.

The spelling of 51506875671 in words is "fifty-one billion, five hundred six million, eight hundred seventy-five thousand, six hundred seventy-one".