228172208553401 has 8 divisors (see below), whose sum is σ = 261072518678400. Its totient is φ = 195347968511328.

The previous prime is 228172208553391. The next prime is 228172208553427. The reversal of 228172208553401 is 104355802271822.

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

It is a cyclic number.

It is not a de Polignac number, because 228172208553401 - 2⁶ = 228172208553337 is a prime.

It is a super-2 number, since 2×228172208553401² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 228172208553401.

It is not an unprimeable number, because it can be changed into a prime (228172208553431) 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, 19017514301 + ... + 19017526298.

It is an arithmetic number, because the mean of its divisors is an integer number (32634064834800).

Almost surely, 2^{228172208553401} is an apocalyptic number.

It is an amenable number.

228172208553401 is a deficient number, since it is larger than the sum of its proper divisors (32900310124999).

228172208553401 is an equidigital number, since it uses as much as digits as its factorization.

228172208553401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38035041463.

The product of its (nonzero) digits is 2150400, while the sum is 50.

The spelling of 228172208553401 in words is "two hundred twenty-eight trillion, one hundred seventy-two billion, two hundred eight million, five hundred fifty-three thousand, four hundred one".