16602216551 has 8 divisors (see below), whose sum is σ = 17198244000. Its totient is φ = 16015288960.

The previous prime is 16602216509. The next prime is 16602216571. The reversal of 16602216551 is 15561220661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16602216551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16602216571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2271251 + ... + 2278548.

It is an arithmetic number, because the mean of its divisors is an integer number (2149780500).

Almost surely, 2^16602216551 is an apocalyptic number.

16602216551 is a deficient number, since it is larger than the sum of its proper divisors (596027449).

16602216551 is an equidigital number, since it uses as much as digits as its factorization.

16602216551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549929.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 16602216551 in words is "sixteen billion, six hundred two million, two hundred sixteen thousand, five hundred fifty-one".