172890288573 has 32 divisors (see below), whose sum is σ = 242745065472. Its totient is φ = 109319846400.

The previous prime is 172890288569. The next prime is 172890288617. The reversal of 172890288573 is 375882098271.

It is not a de Polignac number, because 172890288573 - 2² = 172890288569 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172890288503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 836128 + ... + 1022198.

It is an arithmetic number, because the mean of its divisors is an integer number (7585783296).

Almost surely, 2^172890288573 is an apocalyptic number.

It is an amenable number.

172890288573 is a deficient number, since it is larger than the sum of its proper divisors (69854776899).

172890288573 is a wasteful number, since it uses less digits than its factorization.

172890288573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186305.

The product of its (nonzero) digits is 13547520, while the sum is 60.

The spelling of 172890288573 in words is "one hundred seventy-two billion, eight hundred ninety million, two hundred eighty-eight thousand, five hundred seventy-three".