166106412604331 has 12 divisors (see below), whose sum is σ = 175359637955664. Its totient is φ = 157318500877200.

The previous prime is 166106412604309. The next prime is 166106412604399. The reversal of 166106412604331 is 133406214601661.

It is a de Polignac number, because none of the positive numbers 2^k-166106412604331 is a prime.

It is a super-2 number, since 2×166106412604331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166106412604631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65223935 + ... + 67722776.

It is an arithmetic number, because the mean of its divisors is an integer number (14613303162972).

Almost surely, 2^{166106412604331} is an apocalyptic number.

166106412604331 is a deficient number, since it is larger than the sum of its proper divisors (9253225351333).

166106412604331 is a wasteful number, since it uses less digits than its factorization.

166106412604331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132950210 (or 132950191 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 166106412604331 in words is "one hundred sixty-six trillion, one hundred six billion, four hundred twelve million, six hundred four thousand, three hundred thirty-one".