166451414009 has 16 divisors (see below), whose sum is σ = 172761845760. Its totient is φ = 160272808080.

The previous prime is 166451413991. The next prime is 166451414039. The reversal of 166451414009 is 900414154661.

It is a cyclic number.

It is not a de Polignac number, because 166451414009 - 2³⁶ = 97731937273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166451414039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 843074 + ... + 1021604.

It is an arithmetic number, because the mean of its divisors is an integer number (10797615360).

Almost surely, 2^166451414009 is an apocalyptic number.

It is an amenable number.

166451414009 is a deficient number, since it is larger than the sum of its proper divisors (6310431751).

166451414009 is a wasteful number, since it uses less digits than its factorization.

166451414009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178900.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 166451414009 in words is "one hundred sixty-six billion, four hundred fifty-one million, four hundred fourteen thousand, nine".