16601334651 has 24 divisors (see below), whose sum is σ = 26163721584. Its totient is φ = 10059860160.

The previous prime is 16601334643. The next prime is 16601334709. The reversal of 16601334651 is 15643310661.

16601334651 is a `hidden beast` number, since 1 + 6 + 60 + 133 + 465 + 1 = 666.

It is not a de Polignac number, because 16601334651 - 2³ = 16601334643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16601334251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1232485 + ... + 1245881.

It is an arithmetic number, because the mean of its divisors is an integer number (1090155066).

Almost surely, 2^16601334651 is an apocalyptic number.

16601334651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16601334651 is a deficient number, since it is larger than the sum of its proper divisors (9562386933).

16601334651 is a wasteful number, since it uses less digits than its factorization.

16601334651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25931 (or 25928 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 16601334651 in words is "sixteen billion, six hundred one million, three hundred thirty-four thousand, six hundred fifty-one".