172618003906 has 24 divisors (see below), whose sum is σ = 263165656320. Its totient is φ = 84918478392.

The previous prime is 172618003903. The next prime is 172618003907. The reversal of 172618003906 is 609300816271.

It is not an unprimeable number, because it can be changed into a prime (172618003903) 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 11 ways as a sum of consecutive naturals, for example, 7736875 + ... + 7759153.

It is an arithmetic number, because the mean of its divisors is an integer number (10965235680).

Almost surely, 2^172618003906 is an apocalyptic number.

172618003906 is a deficient number, since it is larger than the sum of its proper divisors (90547652414).

172618003906 is an equidigital number, since it uses as much as digits as its factorization.

172618003906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23278 (or 23211 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 172618003906 in words is "one hundred seventy-two billion, six hundred eighteen million, three thousand, nine hundred six".