513525615607 has 4 divisors (see below), whose sum is σ = 513527251216. Its totient is φ = 513523980000.

The previous prime is 513525615599. The next prime is 513525615613. The reversal of 513525615607 is 706516525315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 706516525315 = 5 ⋅141303305063.

It is a cyclic number.

It is not a de Polignac number, because 513525615607 - 2³ = 513525615599 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 (513525625607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182178 + ... + 1029679.

It is an arithmetic number, because the mean of its divisors is an integer number (128381812804).

Almost surely, 2^513525615607 is an apocalyptic number.

513525615607 is a deficient number, since it is larger than the sum of its proper divisors (1635609).

513525615607 is a wasteful number, since it uses less digits than its factorization.

513525615607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635608.

The product of its (nonzero) digits is 945000, while the sum is 46.

The spelling of 513525615607 in words is "five hundred thirteen billion, five hundred twenty-five million, six hundred fifteen thousand, six hundred seven".