51634235717 has 4 divisors (see below), whose sum is σ = 53299856256. Its totient is φ = 49968615180.

The previous prime is 51634235699. The next prime is 51634235749. The reversal of 51634235717 is 71753243615.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51634235717 - 2¹⁰ = 51634234693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51634235777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 832810223 + ... + 832810284.

It is an arithmetic number, because the mean of its divisors is an integer number (13324964064).

Almost surely, 2^51634235717 is an apocalyptic number.

It is an amenable number.

51634235717 is a deficient number, since it is larger than the sum of its proper divisors (1665620539).

51634235717 is a wasteful number, since it uses less digits than its factorization.

51634235717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665620538.

The product of its digits is 529200, while the sum is 44.

The spelling of 51634235717 in words is "fifty-one billion, six hundred thirty-four million, two hundred thirty-five thousand, seven hundred seventeen".