51389898315 has 96 divisors (see below), whose sum is σ = 105678328320. Its totient is φ = 21149162496.

The previous prime is 51389898299. The next prime is 51389898317.

51389898315 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51389898315 - 2⁴ = 51389898299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51389898317) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 197976 + ... + 376794.

It is an arithmetic number, because the mean of its divisors is an integer number (1100815920).

Almost surely, 2^51389898315 is an apocalyptic number.

51389898315 is an abundant number, since it is smaller than the sum of its proper divisors (54288430005).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51389898315 is a wasteful number, since it uses less digits than its factorization.

51389898315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178881 (or 178874 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 60.

The spelling of 51389898315 in words is "fifty-one billion, three hundred eighty-nine million, eight hundred ninety-eight thousand, three hundred fifteen".