51312421314 has 96 divisors (see below), whose sum is σ = 138822353280. Its totient is φ = 13307500800.

The previous prime is 51312421267. The next prime is 51312421327. The reversal of 51312421314 is 41312421315.

51312421314 is a `hidden beast` number, since 513 + 12 + 4 + 2 + 131 + 4 = 666.

It is a super-2 number, since 2×51312421314² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 888142 + ... + 944150.

It is an arithmetic number, because the mean of its divisors is an integer number (1446066180).

Almost surely, 2^51312421314 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51312421314, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69411176640).

51312421314 is an abundant number, since it is smaller than the sum of its proper divisors (87509931966).

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

51312421314 is a wasteful number, since it uses less digits than its factorization.

51312421314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56696 (or 56693 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 51312421314 its reverse (41312421315), we get a palindrome (92624842629).

Subtracting from 51312421314 its reverse (41312421315), we obtain a palindrome (9999999999).

The spelling of 51312421314 in words is "fifty-one billion, three hundred twelve million, four hundred twenty-one thousand, three hundred fourteen".