172048451878 has 8 divisors (see below), whose sum is σ = 258355965600. Its totient is φ = 85929796680.

The previous prime is 172048451867. The next prime is 172048451893. The reversal of 172048451878 is 878154840271.

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

It is a congruent number.

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, 47212353 + ... + 47215996.

It is an arithmetic number, because the mean of its divisors is an integer number (32294495700).

Almost surely, 2^172048451878 is an apocalyptic number.

172048451878 is a deficient number, since it is larger than the sum of its proper divisors (86307513722).

172048451878 is an equidigital number, since it uses as much as digits as its factorization.

172048451878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94429262.

The product of its (nonzero) digits is 4014080, while the sum is 55.

The spelling of 172048451878 in words is "one hundred seventy-two billion, forty-eight million, four hundred fifty-one thousand, eight hundred seventy-eight".