15166002001566 has 96 divisors (see below), whose sum is σ = 34782118904160. Its totient is φ = 4391287160832.

The previous prime is 15166002001561. The next prime is 15166002001643. The reversal of 15166002001566 is 66510020066151.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15166002001561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 117653886 + ... + 117782718.

It is an arithmetic number, because the mean of its divisors is an integer number (362313738585).

Almost surely, 2^{15166002001566} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15166002001566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17391059452080).

15166002001566 is an abundant number, since it is smaller than the sum of its proper divisors (19616116902594).

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

15166002001566 is a wasteful number, since it uses less digits than its factorization.

15166002001566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135710 (or 135697 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 15166002001566 in words is "fifteen trillion, one hundred sixty-six billion, two million, one thousand, five hundred sixty-six".