15166601651606 has 4 divisors (see below), whose sum is σ = 22749902477412. Its totient is φ = 7583300825802.

The previous prime is 15166601651581. The next prime is 15166601651693. The reversal of 15166601651606 is 60615610666151.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3791650412900 + ... + 3791650412903.

It is an arithmetic number, because the mean of its divisors is an integer number (5687475619353).

Almost surely, 2^{15166601651606} is an apocalyptic number.

15166601651606 is a deficient number, since it is larger than the sum of its proper divisors (7583300825806).

15166601651606 is an equidigital number, since it uses as much as digits as its factorization.

15166601651606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7583300825805.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 15166601651606 in words is "fifteen trillion, one hundred sixty-six billion, six hundred one million, six hundred fifty-one thousand, six hundred six".