513641455235631 has 12 divisors (see below), whose sum is σ = 741960954121608. Its totient is φ = 342411756360624.

The previous prime is 513641455235621. The next prime is 513641455235683. The reversal of 513641455235631 is 136532554146315.

513641455235631 is a `hidden beast` number, since 5 + 1 + 3 + 6 + 4 + 1 + 4 + 55 + 23 + 563 + 1 = 666.

It is not a de Polignac number, because 513641455235631 - 2⁵ = 513641455235599 is a prime.

It is a super-2 number, since 2×513641455235631² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513641455235621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1323167080 + ... + 1323555213.

It is an arithmetic number, because the mean of its divisors is an integer number (61830079510134).

Almost surely, 2^{513641455235631} is an apocalyptic number.

513641455235631 is a deficient number, since it is larger than the sum of its proper divisors (228319498885977).

513641455235631 is a wasteful number, since it uses less digits than its factorization.

513641455235631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646743862 (or 2646743859 counting only the distinct ones).

The product of its digits is 19440000, while the sum is 54.

The spelling of 513641455235631 in words is "five hundred thirteen trillion, six hundred forty-one billion, four hundred fifty-five million, two hundred thirty-five thousand, six hundred thirty-one".