216364551613 has 4 divisors (see below), whose sum is σ = 247273773280. Its totient is φ = 185455329948.

The previous prime is 216364551593. The next prime is 216364551617. The reversal of 216364551613 is 316155463612.

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 not a de Polignac number, because 216364551613 - 2⁹ = 216364551101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216364551613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216364551617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15454610823 + ... + 15454610836.

It is an arithmetic number, because the mean of its divisors is an integer number (61818443320).

Almost surely, 2^216364551613 is an apocalyptic number.

It is an amenable number.

216364551613 is a deficient number, since it is larger than the sum of its proper divisors (30909221667).

216364551613 is an equidigital number, since it uses as much as digits as its factorization.

216364551613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30909221666.

The product of its digits is 388800, while the sum is 43.

The spelling of 216364551613 in words is "two hundred sixteen billion, three hundred sixty-four million, five hundred fifty-one thousand, six hundred thirteen".