513166451231 has 24 divisors (see below), whose sum is σ = 614579099904. Its totient is φ = 426991687920.

The previous prime is 513166451209. The next prime is 513166451233. The reversal of 513166451231 is 132154661315.

It is not a de Polignac number, because 513166451231 - 2²² = 513162256927 is a prime.

It is a super-2 number, since 2×513166451231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513166451233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 403655 + ... + 1090536.

It is an arithmetic number, because the mean of its divisors is an integer number (25607462496).

Almost surely, 2^513166451231 is an apocalyptic number.

513166451231 is a deficient number, since it is larger than the sum of its proper divisors (101412648673).

513166451231 is a wasteful number, since it uses less digits than its factorization.

513166451231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494411 (or 1494404 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The spelling of 513166451231 in words is "five hundred thirteen billion, one hundred sixty-six million, four hundred fifty-one thousand, two hundred thirty-one".