166551650602 has 4 divisors (see below), whose sum is σ = 249827475906. Its totient is φ = 83275825300.

The previous prime is 166551650597. The next prime is 166551650641. The reversal of 166551650602 is 206056155661.

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

It can be written as a sum of positive squares in only one way, i.e., 165233307121 + 1318343481 = 406489^2 + 36309^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41637912649 + ... + 41637912652.

Almost surely, 2^166551650602 is an apocalyptic number.

166551650602 is a deficient number, since it is larger than the sum of its proper divisors (83275825304).

166551650602 is an equidigital number, since it uses as much as digits as its factorization.

166551650602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83275825303.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 166551650602 in words is "one hundred sixty-six billion, five hundred fifty-one million, six hundred fifty thousand, six hundred two".