513346621361 has 32 divisors (see below), whose sum is σ = 610108950528. Its totient is φ = 422662302720.

The previous prime is 513346621327. The next prime is 513346621397. The reversal of 513346621361 is 163126643315.

It is not a de Polignac number, because 513346621361 - 2¹⁸ = 513346359217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (513346621301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18496451 + ... + 18524183.

It is an arithmetic number, because the mean of its divisors is an integer number (19065904704).

Almost surely, 2^513346621361 is an apocalyptic number.

It is an amenable number.

513346621361 is a deficient number, since it is larger than the sum of its proper divisors (96762329167).

513346621361 is a wasteful number, since it uses less digits than its factorization.

513346621361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28401.

The product of its digits is 233280, while the sum is 41.

The spelling of 513346621361 in words is "five hundred thirteen billion, three hundred forty-six million, six hundred twenty-one thousand, three hundred sixty-one".