166279423885 has 8 divisors (see below), whose sum is σ = 199556257536. Its totient is φ = 133009573200.

The previous prime is 166279423883. The next prime is 166279423903. The reversal of 166279423885 is 588324972661.

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

It is not a de Polignac number, because 166279423885 - 2¹ = 166279423883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166279423883) 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, 1693209 + ... + 1788718.

It is an arithmetic number, because the mean of its divisors is an integer number (24944532192).

Almost surely, 2^166279423885 is an apocalyptic number.

It is an amenable number.

166279423885 is a deficient number, since it is larger than the sum of its proper divisors (33276833651).

166279423885 is an equidigital number, since it uses as much as digits as its factorization.

166279423885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491483.

The product of its digits is 34836480, while the sum is 61.

The spelling of 166279423885 in words is "one hundred sixty-six billion, two hundred seventy-nine million, four hundred twenty-three thousand, eight hundred eighty-five".