166872600461 has 8 divisors (see below), whose sum is σ = 193837962624. Its totient is φ = 140688843120.

The previous prime is 166872600449. The next prime is 166872600509. The reversal of 166872600461 is 164006278661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166872600461 - 2³⁰ = 165798858637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166872600421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195400745 + ... + 195401598.

It is an arithmetic number, because the mean of its divisors is an integer number (24229745328).

Almost surely, 2^166872600461 is an apocalyptic number.

It is an amenable number.

166872600461 is a deficient number, since it is larger than the sum of its proper divisors (26965362163).

166872600461 is an equidigital number, since it uses as much as digits as its factorization.

166872600461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390802411.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 166872600461 in words is "one hundred sixty-six billion, eight hundred seventy-two million, six hundred thousand, four hundred sixty-one".