228284712561 has 8 divisors (see below), whose sum is σ = 304415804320. Its totient is φ = 152171714592.

The previous prime is 228284712553. The next prime is 228284712577. The reversal of 228284712561 is 165217482822.

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

It is not a de Polignac number, because 228284712561 - 2³ = 228284712553 is a prime.

It is a super-2 number, since 2×228284712561² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228284712561.

It is not an unprimeable number, because it can be changed into a prime (228286712561) 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, 4493980 + ... + 4544493.

It is an arithmetic number, because the mean of its divisors is an integer number (38051975540).

Almost surely, 2^228284712561 is an apocalyptic number.

It is an amenable number.

228284712561 is a deficient number, since it is larger than the sum of its proper divisors (76131091759).

228284712561 is an equidigital number, since it uses as much as digits as its factorization.

228284712561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9046895.

The product of its digits is 860160, while the sum is 48.

The spelling of 228284712561 in words is "two hundred twenty-eight billion, two hundred eighty-four million, seven hundred twelve thousand, five hundred sixty-one".