16523661164 has 12 divisors (see below), whose sum is σ = 29015099904. Its totient is φ = 8233632624.

The previous prime is 16523661149. The next prime is 16523661181. The reversal of 16523661164 is 46116632561.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7048172 + ... + 7050515.

It is an arithmetic number, because the mean of its divisors is an integer number (2417924992).

Almost surely, 2^16523661164 is an apocalyptic number.

It is an amenable number.

16523661164 is a deficient number, since it is larger than the sum of its proper divisors (12491438740).

16523661164 is a wasteful number, since it uses less digits than its factorization.

16523661164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14098984 (or 14098982 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The spelling of 16523661164 in words is "sixteen billion, five hundred twenty-three million, six hundred sixty-one thousand, one hundred sixty-four".