16646745088 has 44 divisors (see below), whose sum is σ = 33582754480. Its totient is φ = 8246956032.

The previous prime is 16646745079. The next prime is 16646745107. The reversal of 16646745088 is 88054764661.

It is a super-2 number, since 2×16646745088² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37045 + ... + 186187.

It is an arithmetic number, because the mean of its divisors is an integer number (763244420).

Almost surely, 2^16646745088 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 16646745088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16791377240).

16646745088 is an abundant number, since it is smaller than the sum of its proper divisors (16936009392).

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

16646745088 is a wasteful number, since it uses less digits than its factorization.

16646745088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149272 (or 149254 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 16646745088 in words is "sixteen billion, six hundred forty-six million, seven hundred forty-five thousand, eighty-eight".