513514201025421 has 20 divisors (see below), whose sum is σ = 767199518935872. Its totient is φ = 342299039197608.

The previous prime is 513514201025387. The next prime is 513514201025447. The reversal of 513514201025421 is 124520102415315.

513514201025421 is a `hidden beast` number, since 5 + 1 + 3 + 5 + 1 + 4 + 2 + 0 + 102 + 542 + 1 = 666.

It is not a de Polignac number, because 513514201025421 - 2¹⁰ = 513514201024397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513514201025491) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 404561371 + ... + 405828696.

Almost surely, 2^{513514201025421} is an apocalyptic number.

It is an amenable number.

513514201025421 is a deficient number, since it is larger than the sum of its proper divisors (253685317910451).

513514201025421 is an equidigital number, since it uses as much as digits as its factorization.

513514201025421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810397902 (or 810397893 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 513514201025421 in words is "five hundred thirteen trillion, five hundred fourteen billion, two hundred one million, twenty-five thousand, four hundred twenty-one".