166424266572 has 24 divisors (see below), whose sum is σ = 389381400576. Its totient is φ = 55323596688.

The previous prime is 166424266543. The next prime is 166424266601. The reversal of 166424266572 is 275662424661.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (166424266543) and next prime (166424266601).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18890268 + ... + 18899075.

It is an arithmetic number, because the mean of its divisors is an integer number (16224225024).

Almost surely, 2^166424266572 is an apocalyptic number.

166424266572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166424266572 is an abundant number, since it is smaller than the sum of its proper divisors (222957134004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166424266572 is a wasteful number, since it uses less digits than its factorization.

166424266572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37789717 (or 37789715 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 51.

The spelling of 166424266572 in words is "one hundred sixty-six billion, four hundred twenty-four million, two hundred sixty-six thousand, five hundred seventy-two".