16651697136 has 80 divisors (see below), whose sum is σ = 44917601280. Its totient is φ = 5305639680.

The previous prime is 16651697129. The next prime is 16651697141. The reversal of 16651697136 is 63179615661.

16651697136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1970841 + ... + 1979271.

It is an arithmetic number, because the mean of its divisors is an integer number (561470016).

Almost surely, 2^16651697136 is an apocalyptic number.

16651697136 is a gapful number since it is divisible by the number (16) 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 16651697136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22458800640).

16651697136 is an abundant number, since it is smaller than the sum of its proper divisors (28265904144).

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

16651697136 is a wasteful number, since it uses less digits than its factorization.

16651697136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10254 (or 10248 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 51.

The spelling of 16651697136 in words is "sixteen billion, six hundred fifty-one million, six hundred ninety-seven thousand, one hundred thirty-six".