172056221055701 has 8 divisors (see below), whose sum is σ = 181111953887520. Its totient is φ = 163000502448912.

The previous prime is 172056221055629. The next prime is 172056221055703. The reversal of 172056221055701 is 107550122650271.

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

It is a cyclic number.

It is not a de Polignac number, because 172056221055701 - 2³⁸ = 171781343148757 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 (172056221055703) 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, 28836626 + ... + 34287948.

It is an arithmetic number, because the mean of its divisors is an integer number (22638994235940).

Almost surely, 2^{172056221055701} is an apocalyptic number.

It is an amenable number.

172056221055701 is a deficient number, since it is larger than the sum of its proper divisors (9055732831819).

172056221055701 is a wasteful number, since it uses less digits than its factorization.

172056221055701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7112515.

The product of its (nonzero) digits is 294000, while the sum is 44.

The spelling of 172056221055701 in words is "one hundred seventy-two trillion, fifty-six billion, two hundred twenty-one million, fifty-five thousand, seven hundred one".