513868868315 has 16 divisors (see below), whose sum is σ = 672841935360. Its totient is φ = 373644551520.

The previous prime is 513868868311. The next prime is 513868868351.

513868868315 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 513868868315 - 2² = 513868868311 is a prime.

It is a super-2 number, since 2×513868868315² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (513868868311) 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, 712595 + ... + 1239164.

It is an arithmetic number, because the mean of its divisors is an integer number (42052620960).

Almost surely, 2^513868868315 is an apocalyptic number.

513868868315 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

513868868315 is a deficient number, since it is larger than the sum of its proper divisors (158973067045).

513868868315 is a wasteful number, since it uses less digits than its factorization.

513868868315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1956562.

The product of its digits is 33177600, while the sum is 62.

The spelling of 513868868315 in words is "five hundred thirteen billion, eight hundred sixty-eight million, eight hundred sixty-eight thousand, three hundred fifteen".