172044277401 has 32 divisors (see below), whose sum is σ = 237331607040. Its totient is φ = 110789409024.

The previous prime is 172044277397. The next prime is 172044277463. The reversal of 172044277401 is 104772440271.

It is not a de Polignac number, because 172044277401 - 2² = 172044277397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172044277401.

It is not an unprimeable number, because it can be changed into a prime (172044277501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8174670 + ... + 8195688.

It is an arithmetic number, because the mean of its divisors is an integer number (7416612720).

Almost surely, 2^172044277401 is an apocalyptic number.

It is an amenable number.

172044277401 is a deficient number, since it is larger than the sum of its proper divisors (65287329639).

172044277401 is a wasteful number, since it uses less digits than its factorization.

172044277401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21765.

The product of its (nonzero) digits is 87808, while the sum is 39.

The spelling of 172044277401 in words is "one hundred seventy-two billion, forty-four million, two hundred seventy-seven thousand, four hundred one".