51679297615 has 8 divisors (see below), whose sum is σ = 67652898768. Its totient is φ = 37584943680.

The previous prime is 51679297613. The next prime is 51679297619.

51679297615 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 51679297615 - 2¹ = 51679297613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51679297615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51679297613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469811742 + ... + 469811851.

It is an arithmetic number, because the mean of its divisors is an integer number (8456612346).

Almost surely, 2^51679297615 is an apocalyptic number.

51679297615 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51679297615 is a deficient number, since it is larger than the sum of its proper divisors (15973601153).

51679297615 is a wasteful number, since it uses less digits than its factorization.

51679297615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939623609.

The product of its digits is 7144200, while the sum is 58.

The spelling of 51679297615 in words is "fifty-one billion, six hundred seventy-nine million, two hundred ninety-seven thousand, six hundred fifteen".