166494349065 has 32 divisors (see below), whose sum is σ = 290629005696. Its totient is φ = 80718786560.

The previous prime is 166494349051. The next prime is 166494349093. The reversal of 166494349065 is 560943494661.

It is not a de Polignac number, because 166494349065 - 2⁸ = 166494348809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166494348996 and 166494349014.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3134569 + ... + 3187241.

It is an arithmetic number, because the mean of its divisors is an integer number (9082156428).

Almost surely, 2^166494349065 is an apocalyptic number.

166494349065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166494349065 is a deficient number, since it is larger than the sum of its proper divisors (124134656631).

166494349065 is a wasteful number, since it uses less digits than its factorization.

166494349065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71849.

The product of its (nonzero) digits is 16796160, while the sum is 57.

The spelling of 166494349065 in words is "one hundred sixty-six billion, four hundred ninety-four million, three hundred forty-nine thousand, sixty-five".