513216532540 has 48 divisors (see below), whose sum is σ = 1080403236864. Its totient is φ = 204782760000.

The previous prime is 513216532457. The next prime is 513216532627. The reversal of 513216532540 is 45235612315.

It is a self number, because there is not a number n which added to its sum of digits gives 513216532540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13664467 + ... + 13701973.

It is an arithmetic number, because the mean of its divisors is an integer number (22508400768).

Almost surely, 2^513216532540 is an apocalyptic number.

It is an amenable number.

513216532540 is an abundant number, since it is smaller than the sum of its proper divisors (567186704324).

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

513216532540 is a wasteful number, since it uses less digits than its factorization.

513216532540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39178 (or 39176 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 513216532540 in words is "five hundred thirteen billion, two hundred sixteen million, five hundred thirty-two thousand, five hundred forty".