15668043066 has 72 divisors (see below), whose sum is σ = 36864603360. Its totient is φ = 4807172448.

The previous prime is 15668043059. The next prime is 15668043067. The reversal of 15668043066 is 66034086651.

15668043066 is a `hidden beast` number, since 1 + 566 + 80 + 4 + 3 + 0 + 6 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (15668043067) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1084905 + ... + 1099251.

It is an arithmetic number, because the mean of its divisors is an integer number (512008380).

Almost surely, 2^15668043066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15668043066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18432301680).

15668043066 is an abundant number, since it is smaller than the sum of its proper divisors (21196560294).

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

15668043066 is a wasteful number, since it uses less digits than its factorization.

15668043066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14740 (or 14724 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 15668043066 in words is "fifteen billion, six hundred sixty-eight million, forty-three thousand, sixty-six".