15566166097 has 8 divisors (see below), whose sum is σ = 15586380576. Its totient is φ = 15545968032.

The previous prime is 15566166073. The next prime is 15566166103. The reversal of 15566166097 is 79066166551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15566166097 - 2¹¹ = 15566164049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15566166397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3490293 + ... + 3494749.

It is an arithmetic number, because the mean of its divisors is an integer number (1948297572).

Almost surely, 2^15566166097 is an apocalyptic number.

It is an amenable number.

15566166097 is a deficient number, since it is larger than the sum of its proper divisors (20214479).

15566166097 is a wasteful number, since it uses less digits than its factorization.

15566166097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8207.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The spelling of 15566166097 in words is "fifteen billion, five hundred sixty-six million, one hundred sixty-six thousand, ninety-seven".