164444972975 has 12 divisors (see below), whose sum is σ = 203924117664. Its totient is φ = 131548009920.

The previous prime is 164444972953. The next prime is 164444973031. The reversal of 164444972975 is 579279444461.

It is not a de Polignac number, because 164444972975 - 2³² = 160150005679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240842 + ... + 622008.

It is an arithmetic number, because the mean of its divisors is an integer number (16993676472).

Almost surely, 2^164444972975 is an apocalyptic number.

164444972975 is a deficient number, since it is larger than the sum of its proper divisors (39479144689).

164444972975 is a wasteful number, since it uses less digits than its factorization.

164444972975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398434 (or 398429 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 62.

The spelling of 164444972975 in words is "one hundred sixty-four billion, four hundred forty-four million, nine hundred seventy-two thousand, nine hundred seventy-five".