512315026131321 has 24 divisors (see below), whose sum is σ = 845727177821760. Its totient is φ = 292751171607456.

The previous prime is 512315026131319. The next prime is 512315026131343. The reversal of 512315026131321 is 123131620513215.

It is a happy number.

512315026131321 is a `hidden beast` number, since 5 + 1 + 2 + 3 + 1 + 5 + 0 + 2 + 613 + 1 + 32 + 1 = 666.

It is not a de Polignac number, because 512315026131321 - 2¹ = 512315026131319 is a prime.

It is a super-2 number, since 2×512315026131321² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (512315026131301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78818686 + ... + 85070648.

It is an arithmetic number, because the mean of its divisors is an integer number (35238632409240).

Almost surely, 2^{512315026131321} is an apocalyptic number.

It is an amenable number.

512315026131321 is a deficient number, since it is larger than the sum of its proper divisors (333412151690439).

512315026131321 is a wasteful number, since it uses less digits than its factorization.

512315026131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7552685 (or 7552682 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

Adding to 512315026131321 its reverse (123131620513215), we get a palindrome (635446646644536).

The spelling of 512315026131321 in words is "five hundred twelve trillion, three hundred fifteen billion, twenty-six million, one hundred thirty-one thousand, three hundred twenty-one".