16656697344 has 192 divisors, whose sum is σ = 50986091520. Its totient is φ = 4737024000.

The previous prime is 16656697331. The next prime is 16656697361. The reversal of 16656697344 is 44379665661.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10794237 + ... + 10795779.

It is an arithmetic number, because the mean of its divisors is an integer number (265552560).

Almost surely, 2^16656697344 is an apocalyptic number.

16656697344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16656697344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25493045760).

16656697344 is an abundant number, since it is smaller than the sum of its proper divisors (34329394176).

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

16656697344 is a wasteful number, since it uses less digits than its factorization.

16656697344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826 (or 1806 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 57.

The spelling of 16656697344 in words is "sixteen billion, six hundred fifty-six million, six hundred ninety-seven thousand, three hundred forty-four".