513525615604 has 12 divisors (see below), whose sum is σ = 922958201284. Its totient is φ = 249823272384.

The previous prime is 513525615599. The next prime is 513525615613. The reversal of 513525615604 is 406516525315.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 252353513104 + 261172102500 = 502348^2 + 511050^2 .

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1734883689 + ... + 1734883984.

Almost surely, 2^513525615604 is an apocalyptic number.

It is an amenable number.

513525615604 is a deficient number, since it is larger than the sum of its proper divisors (409432585680).

513525615604 is a wasteful number, since it uses less digits than its factorization.

513525615604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469767714 (or 3469767712 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 513525615604 in words is "five hundred thirteen billion, five hundred twenty-five million, six hundred fifteen thousand, six hundred four".