51318416951 has 4 divisors (see below), whose sum is σ = 52511868552. Its totient is φ = 50124965352.

The previous prime is 51318416927. The next prime is 51318416959. The reversal of 51318416951 is 15961481315.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51318416951 - 2³⁴ = 34138547767 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 (51318416959) 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, 596725736 + ... + 596725821.

It is an arithmetic number, because the mean of its divisors is an integer number (13127967138).

Almost surely, 2^51318416951 is an apocalyptic number.

51318416951 is a deficient number, since it is larger than the sum of its proper divisors (1193451601).

51318416951 is a wasteful number, since it uses less digits than its factorization.

51318416951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193451600.

The product of its digits is 129600, while the sum is 44.

The spelling of 51318416951 in words is "fifty-one billion, three hundred eighteen million, four hundred sixteen thousand, nine hundred fifty-one".