513513642745 has 8 divisors (see below), whose sum is σ = 617895437184. Its totient is φ = 409691536944.

The previous prime is 513513642731. The next prime is 513513642781. The reversal of 513513642745 is 547246315315.

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

It is a cyclic number.

It is not a de Polignac number, because 513513642745 - 2²⁹ = 512976771833 is a prime.

It is a super-2 number, since 2×513513642745² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 513513642695 and 513513642704.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139920139 + ... + 139923808.

It is an arithmetic number, because the mean of its divisors is an integer number (77236929648).

Almost surely, 2^513513642745 is an apocalyptic number.

It is an amenable number.

513513642745 is a deficient number, since it is larger than the sum of its proper divisors (104381794439).

513513642745 is a wasteful number, since it uses less digits than its factorization.

513513642745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279844319.

The product of its digits is 1512000, while the sum is 46.

The spelling of 513513642745 in words is "five hundred thirteen billion, five hundred thirteen million, six hundred forty-two thousand, seven hundred forty-five".