15681022168 has 32 divisors (see below), whose sum is σ = 33606588960. Its totient is φ = 6719558400.

The previous prime is 15681022141. The next prime is 15681022193. The reversal of 15681022168 is 86122018651.

It is a happy number.

15681022168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 15681022168.

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 7 ways as a sum of consecutive naturals, for example, 594868 + ... + 620668.

It is an arithmetic number, because the mean of its divisors is an integer number (1050205905).

Almost surely, 2^15681022168 is an apocalyptic number.

It is an amenable number.

15681022168 is an abundant number, since it is smaller than the sum of its proper divisors (17925566792).

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

15681022168 is a wasteful number, since it uses less digits than its factorization.

15681022168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36667 (or 36663 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 15681022168 in words is "fifteen billion, six hundred eighty-one million, twenty-two thousand, one hundred sixty-eight".