513559552243 has 32 divisors (see below), whose sum is σ = 532000465920. Its totient is φ = 495470304000.

The previous prime is 513559552229. The next prime is 513559552249. The reversal of 513559552243 is 342255955315.

It is a cyclic number.

It is not a de Polignac number, because 513559552243 - 2²¹ = 513557455091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513559552249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1255646623 + ... + 1255647031.

It is an arithmetic number, because the mean of its divisors is an integer number (16625014560).

Almost surely, 2^513559552243 is an apocalyptic number.

513559552243 is a deficient number, since it is larger than the sum of its proper divisors (18440913677).

513559552243 is a wasteful number, since it uses less digits than its factorization.

513559552243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387.

The product of its digits is 4050000, while the sum is 49.

The spelling of 513559552243 in words is "five hundred thirteen billion, five hundred fifty-nine million, five hundred fifty-two thousand, two hundred forty-three".