166562151566 has 8 divisors (see below), whose sum is σ = 249882910200. Its totient is φ = 83267848168.

The previous prime is 166562151563. The next prime is 166562151577. The reversal of 166562151566 is 665151265661.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166562151563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6598061 + ... + 6623256.

It is an arithmetic number, because the mean of its divisors is an integer number (31235363775).

Almost surely, 2^166562151566 is an apocalyptic number.

166562151566 is a deficient number, since it is larger than the sum of its proper divisors (83320758634).

166562151566 is a wasteful number, since it uses less digits than its factorization.

166562151566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13227618.

The product of its digits is 1944000, while the sum is 50.

The spelling of 166562151566 in words is "one hundred sixty-six billion, five hundred sixty-two million, one hundred fifty-one thousand, five hundred sixty-six".