15623120166 has 32 divisors (see below), whose sum is σ = 32159317248. Its totient is φ = 5057717280.

The previous prime is 15623120153. The next prime is 15623120171. The reversal of 15623120166 is 66102132651.

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, 245145 + ... + 302228.

It is an arithmetic number, because the mean of its divisors is an integer number (1004978664).

Almost surely, 2^15623120166 is an apocalyptic number.

15623120166 is an abundant number, since it is smaller than the sum of its proper divisors (16536197082).

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

15623120166 is a wasteful number, since it uses less digits than its factorization.

15623120166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547516.

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 15623120166 in words is "fifteen billion, six hundred twenty-three million, one hundred twenty thousand, one hundred sixty-six".