172417601442565 has 16 divisors (see below), whose sum is σ = 211714046172288. Its totient is φ = 134725503358656.

The previous prime is 172417601442553. The next prime is 172417601442601. The reversal of 172417601442565 is 565244106714271.

It is a cyclic number.

It is not a de Polignac number, because 172417601442565 - 2¹⁷ = 172417601311493 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 15 ways as a sum of consecutive naturals, for example, 34843672 + ... + 39483118.

It is an arithmetic number, because the mean of its divisors is an integer number (13232127885768).

Almost surely, 2^{172417601442565} is an apocalyptic number.

It is an amenable number.

172417601442565 is a deficient number, since it is larger than the sum of its proper divisors (39296444729723).

172417601442565 is a wasteful number, since it uses less digits than its factorization.

172417601442565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4812348.

The product of its (nonzero) digits is 11289600, while the sum is 55.

The spelling of 172417601442565 in words is "one hundred seventy-two trillion, four hundred seventeen billion, six hundred one million, four hundred forty-two thousand, five hundred sixty-five".