513513342636 has 48 divisors (see below), whose sum is σ = 1371020931840. Its totient is φ = 146541096000.

The previous prime is 513513342631. The next prime is 513513342653. The reversal of 513513342636 is 636243315315.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (513513342631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3617490 + ... + 3756761.

It is an arithmetic number, because the mean of its divisors is an integer number (28562936080).

Almost surely, 2^513513342636 is an apocalyptic number.

It is an amenable number.

513513342636 is an abundant number, since it is smaller than the sum of its proper divisors (857507589204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

513513342636 is a wasteful number, since it uses less digits than its factorization.

513513342636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7375094 (or 7375092 counting only the distinct ones).

The product of its digits is 583200, while the sum is 42.

The spelling of 513513342636 in words is "five hundred thirteen billion, five hundred thirteen million, three hundred forty-two thousand, six hundred thirty-six".