216624260513 has 4 divisors (see below), whose sum is σ = 219366339840. Its totient is φ = 213882181188.

The previous prime is 216624260431. The next prime is 216624260521. The reversal of 216624260513 is 315062426612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216624260513 - 2⁸ = 216624260257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216624262513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1371039545 + ... + 1371039702.

It is an arithmetic number, because the mean of its divisors is an integer number (54841584960).

Almost surely, 2^216624260513 is an apocalyptic number.

It is an amenable number.

216624260513 is a deficient number, since it is larger than the sum of its proper divisors (2742079327).

216624260513 is an equidigital number, since it uses as much as digits as its factorization.

216624260513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742079326.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 216624260513 in words is "two hundred sixteen billion, six hundred twenty-four million, two hundred sixty thousand, five hundred thirteen".