166201155174444 has 96 divisors (see below), whose sum is σ = 426624562151424. Its totient is φ = 50042930246400.

The previous prime is 166201155174427. The next prime is 166201155174473. The reversal of 166201155174444 is 444471551102661.

It is a super-2 number, since 2×166201155174444² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23075832 + ... + 29409119.

It is an arithmetic number, because the mean of its divisors is an integer number (4444005855744).

Almost surely, 2^{166201155174444} is an apocalyptic number.

It is an amenable number.

166201155174444 is an abundant number, since it is smaller than the sum of its proper divisors (260423406976980).

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

166201155174444 is a wasteful number, since it uses less digits than its factorization.

166201155174444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52485407 (or 52485405 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 166201155174444 in words is "one hundred sixty-six trillion, two hundred one billion, one hundred fifty-five million, one hundred seventy-four thousand, four hundred forty-four".