12166157015 has 16 divisors (see below), whose sum is σ = 15644428128. Its totient is φ = 9050029056.

The previous prime is 12166156999. The next prime is 12166157021. The reversal of 12166157015 is 51075166121.

It is a cyclic number.

It is not a de Polignac number, because 12166157015 - 2⁴ = 12166156999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 855182 + ... + 869291.

It is an arithmetic number, because the mean of its divisors is an integer number (977776758).

Almost surely, 2^12166157015 is an apocalyptic number.

12166157015 is a deficient number, since it is larger than the sum of its proper divisors (3478271113).

12166157015 is a wasteful number, since it uses less digits than its factorization.

12166157015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724578.

The product of its (nonzero) digits is 12600, while the sum is 35.

The spelling of 12166157015 in words is "twelve billion, one hundred sixty-six million, one hundred fifty-seven thousand, fifteen".