51707203869 has 4 divisors (see below), whose sum is σ = 68942938496. Its totient is φ = 34471469244.

The previous prime is 51707203759. The next prime is 51707203871. The reversal of 51707203869 is 96830270715.

51707203869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 51707203869 - 2¹⁵ = 51707171101 is a prime.

It is a super-2 number, since 2×51707203869² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51707203879) 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, 8617867309 + ... + 8617867314.

It is an arithmetic number, because the mean of its divisors is an integer number (17235734624).

Almost surely, 2^51707203869 is an apocalyptic number.

It is an amenable number.

51707203869 is a deficient number, since it is larger than the sum of its proper divisors (17235734627).

51707203869 is a wasteful number, since it uses less digits than its factorization.

51707203869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17235734626.

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 51707203869 in words is "fifty-one billion, seven hundred seven million, two hundred three thousand, eight hundred sixty-nine".