15646195994160 has 160 divisors (see below), whose sum is σ = 49695754268160. Its totient is φ = 4069986729984.

The previous prime is 15646195994089. The next prime is 15646195994179. The reversal of 15646195994160 is 6149959164651.

It is a junction number, because it is equal to n+sod(n) for n = 15646195994091 and 15646195994100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6950317 + ... + 8921843.

It is an arithmetic number, because the mean of its divisors is an integer number (310598464176).

Almost surely, 2^{15646195994160} is an apocalyptic number.

15646195994160 is a gapful number since it is divisible by the number (10) 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 15646195994160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24847877134080).

15646195994160 is an abundant number, since it is smaller than the sum of its proper divisors (34049558274000).

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

15646195994160 is a wasteful number, since it uses less digits than its factorization.

15646195994160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972355 (or 1972349 counting only the distinct ones).

The product of its (nonzero) digits is 62985600, while the sum is 66.

The spelling of 15646195994160 in words is "fifteen trillion, six hundred forty-six billion, one hundred ninety-five million, nine hundred ninety-four thousand, one hundred sixty".