172072272279 has 8 divisors (see below), whose sum is σ = 229432089712. Its totient is φ = 114713651520.

The previous prime is 172072272257. The next prime is 172072272347. The reversal of 172072272279 is 972272270271.

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

It is not a de Polignac number, because 172072272279 - 2⁸ = 172072272023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172072272679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120417 + ... + 598869.

It is an arithmetic number, because the mean of its divisors is an integer number (28679011214).

Almost surely, 2^172072272279 is an apocalyptic number.

172072272279 is a deficient number, since it is larger than the sum of its proper divisors (57359817433).

172072272279 is a wasteful number, since it uses less digits than its factorization.

172072272279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598337.

The product of its (nonzero) digits is 691488, while the sum is 48.

The spelling of 172072272279 in words is "one hundred seventy-two billion, seventy-two million, two hundred seventy-two thousand, two hundred seventy-nine".