513525615545 has 16 divisors (see below), whose sum is σ = 617109122880. Its totient is φ = 410235268800.

The previous prime is 513525615503. The next prime is 513525615553. The reversal of 513525615545 is 545516525315.

It is not a de Polignac number, because 513525615545 - 2¹⁶ = 513525550009 is a prime.

It is a super-2 number, since 2×513525615545² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 513525615545.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12110030 + ... + 12152360.

It is an arithmetic number, because the mean of its divisors is an integer number (38569320180).

Almost surely, 2^513525615545 is an apocalyptic number.

It is an amenable number.

513525615545 is a deficient number, since it is larger than the sum of its proper divisors (103583507335).

513525615545 is a wasteful number, since it uses less digits than its factorization.

513525615545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45736.

The product of its digits is 2250000, while the sum is 47.

The spelling of 513525615545 in words is "five hundred thirteen billion, five hundred twenty-five million, six hundred fifteen thousand, five hundred forty-five".