16642664562 has 32 divisors (see below), whose sum is σ = 34002726912. Its totient is φ = 5428052624.

The previous prime is 16642664561. The next prime is 16642664627. The reversal of 16642664562 is 26546624661.

It is not an unprimeable number, because it can be changed into a prime (16642664561) 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 15 ways as a sum of consecutive naturals, for example, 1632493 + ... + 1642655.

It is an arithmetic number, because the mean of its divisors is an integer number (1062585216).

Almost surely, 2^16642664562 is an apocalyptic number.

16642664562 is an abundant number, since it is smaller than the sum of its proper divisors (17360062350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16642664562 is a wasteful number, since it uses less digits than its factorization.

16642664562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16022.

The product of its digits is 2488320, while the sum is 48.

The spelling of 16642664562 in words is "sixteen billion, six hundred forty-two million, six hundred sixty-four thousand, five hundred sixty-two".