16642665032 has 128 divisors (see below), whose sum is σ = 38698352640. Its totient is φ = 6547338240.

The previous prime is 16642665031. The next prime is 16642665047. The reversal of 16642665032 is 23056624661.

It is a happy number.

It is a super-2 number, since 2×16642665032² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16642665031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19284233 + ... + 19285095.

It is an arithmetic number, because the mean of its divisors is an integer number (302330880).

Almost surely, 2^16642665032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16642665032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19349176320).

16642665032 is an abundant number, since it is smaller than the sum of its proper divisors (22055687608).

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

16642665032 is a wasteful number, since it uses less digits than its factorization.

16642665032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371 (or 1367 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 16642665032 in words is "sixteen billion, six hundred forty-two million, six hundred sixty-five thousand, thirty-two".