513215644663 has 8 divisors (see below), whose sum is σ = 550003135968. Its totient is φ = 477634300704.

The previous prime is 513215644619. The next prime is 513215644727. The reversal of 513215644663 is 366446512315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-513215644663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513215648663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301535956 + ... + 301537657.

It is an arithmetic number, because the mean of its divisors is an integer number (68750391996).

Almost surely, 2^513215644663 is an apocalyptic number.

513215644663 is a deficient number, since it is larger than the sum of its proper divisors (36787491305).

513215644663 is a wasteful number, since it uses less digits than its factorization.

513215644663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603073673.

The product of its digits is 1555200, while the sum is 46.

The spelling of 513215644663 in words is "five hundred thirteen billion, two hundred fifteen million, six hundred forty-four thousand, six hundred sixty-three".