172668552089 has 16 divisors (see below), whose sum is σ = 202890842880. Its totient is φ = 145251383760.

The previous prime is 172668552071. The next prime is 172668552097. The reversal of 172668552089 is 980255866271.

It is a cyclic number.

It is not a de Polignac number, because 172668552089 - 2⁸ = 172668551833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172668552019) 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 15 ways as a sum of consecutive naturals, for example, 9597587 + ... + 9615560.

It is an arithmetic number, because the mean of its divisors is an integer number (12680677680).

Almost surely, 2^172668552089 is an apocalyptic number.

172668552089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

172668552089 is a deficient number, since it is larger than the sum of its proper divisors (30222290791).

172668552089 is a wasteful number, since it uses less digits than its factorization.

172668552089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19213220.

The product of its (nonzero) digits is 14515200, while the sum is 59.

The spelling of 172668552089 in words is "one hundred seventy-two billion, six hundred sixty-eight million, five hundred fifty-two thousand, eighty-nine".