172906985098 has 8 divisors (see below), whose sum is σ = 259583491008. Its totient is φ = 86379154764.

The previous prime is 172906985077. The next prime is 172906985131. The reversal of 172906985098 is 890589609271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37165986 + ... + 37170637.

It is an arithmetic number, because the mean of its divisors is an integer number (32447936376).

Almost surely, 2^172906985098 is an apocalyptic number.

172906985098 is a deficient number, since it is larger than the sum of its proper divisors (86676505910).

172906985098 is a wasteful number, since it uses less digits than its factorization.

172906985098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74337788.

The product of its (nonzero) digits is 19595520, while the sum is 64.

The spelling of 172906985098 in words is "one hundred seventy-two billion, nine hundred six million, nine hundred eighty-five thousand, ninety-eight".