51787383117 has 8 divisors (see below), whose sum is σ = 72684046560. Its totient is φ = 32707820880.

The previous prime is 51787383107. The next prime is 51787383149. The reversal of 51787383117 is 71138378715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51787383117 - 2¹⁰ = 51787382093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51787383117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51787383107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454275234 + ... + 454275347.

It is an arithmetic number, because the mean of its divisors is an integer number (9085505820).

Almost surely, 2^51787383117 is an apocalyptic number.

51787383117 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

51787383117 is a deficient number, since it is larger than the sum of its proper divisors (20896663443).

51787383117 is a wasteful number, since it uses less digits than its factorization.

51787383117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908550603.

The product of its digits is 987840, while the sum is 51.

The spelling of 51787383117 in words is "fifty-one billion, seven hundred eighty-seven million, three hundred eighty-three thousand, one hundred seventeen".