51958438615 has 16 divisors (see below), whose sum is σ = 64581140736. Its totient is φ = 40088563200.

The previous prime is 51958438603. The next prime is 51958438619. The reversal of 51958438615 is 51683485915.

It is not a de Polignac number, because 51958438615 - 2²³ = 51950050007 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 (51958438619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 526626 + ... + 617455.

It is an arithmetic number, because the mean of its divisors is an integer number (4036321296).

Almost surely, 2^51958438615 is an apocalyptic number.

51958438615 is a deficient number, since it is larger than the sum of its proper divisors (12622702121).

51958438615 is a wasteful number, since it uses less digits than its factorization.

51958438615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144410.

The product of its digits is 5184000, while the sum is 55.

The spelling of 51958438615 in words is "fifty-one billion, nine hundred fifty-eight million, four hundred thirty-eight thousand, six hundred fifteen".