216320562513 has 24 divisors (see below), whose sum is σ = 341089919040. Its totient is φ = 131018312160.

The previous prime is 216320562509. The next prime is 216320562533. The reversal of 216320562513 is 315265023612.

216320562513 is a `hidden beast` number, since 2 + 1 + 6 + 3 + 20 + 5 + 625 + 1 + 3 = 666.

It is not a de Polignac number, because 216320562513 - 2² = 216320562509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216320562503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 555298 + ... + 860811.

It is an arithmetic number, because the mean of its divisors is an integer number (14212079960).

Almost surely, 2^216320562513 is an apocalyptic number.

It is an amenable number.

216320562513 is a deficient number, since it is larger than the sum of its proper divisors (124769356527).

216320562513 is a wasteful number, since it uses less digits than its factorization.

216320562513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417669 (or 1417666 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 216320562513 in words is "two hundred sixteen billion, three hundred twenty million, five hundred sixty-two thousand, five hundred thirteen".