172455008561 has 8 divisors (see below), whose sum is σ = 192721340448. Its totient is φ = 152953444000.

The previous prime is 172455008491. The next prime is 172455008587. The reversal of 172455008561 is 165800554271.

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 172455008561 - 2²² = 172450814257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172455008591) 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 7 ways as a sum of consecutive naturals, for example, 191191355 + ... + 191192256.

It is an arithmetic number, because the mean of its divisors is an integer number (24090167556).

Almost surely, 2^172455008561 is an apocalyptic number.

172455008561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

172455008561 is a deficient number, since it is larger than the sum of its proper divisors (20266331887).

172455008561 is a wasteful number, since it uses less digits than its factorization.

172455008561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382383663.

The product of its (nonzero) digits is 336000, while the sum is 44.

The spelling of 172455008561 in words is "one hundred seventy-two billion, four hundred fifty-five million, eight thousand, five hundred sixty-one".