166603159605 has 32 divisors (see below), whose sum is σ = 278180534016. Its totient is φ = 84983906304.

The previous prime is 166603159579. The next prime is 166603159607. The reversal of 166603159605 is 506951306661.

It is not a de Polignac number, because 166603159605 - 2¹⁴ = 166603143221 is a prime.

It is a super-2 number, since 2×166603159605² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166603159607) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6367029 + ... + 6393141.

It is an arithmetic number, because the mean of its divisors is an integer number (8693141688).

Almost surely, 2^166603159605 is an apocalyptic number.

166603159605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166603159605 is a deficient number, since it is larger than the sum of its proper divisors (111577374411).

166603159605 is a wasteful number, since it uses less digits than its factorization.

166603159605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44637.

The product of its (nonzero) digits is 874800, while the sum is 48.

The spelling of 166603159605 in words is "one hundred sixty-six billion, six hundred three million, one hundred fifty-nine thousand, six hundred five".