228193644465 has 24 divisors (see below), whose sum is σ = 395994044160. Its totient is φ = 121562232864.

The previous prime is 228193644443. The next prime is 228193644473. The reversal of 228193644465 is 564446391822.

228193644465 is a `hidden beast` number, since 2 + 2 + 8 + 193 + 6 + 4 + 446 + 5 = 666.

It is not a de Polignac number, because 228193644465 - 2⁷ = 228193644337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2899155 + ... + 2976824.

It is an arithmetic number, because the mean of its divisors is an integer number (16499751840).

Almost surely, 2^228193644465 is an apocalyptic number.

It is an amenable number.

228193644465 is a deficient number, since it is larger than the sum of its proper divisors (167800399695).

228193644465 is a wasteful number, since it uses less digits than its factorization.

228193644465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5876853 (or 5876850 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 54.

The spelling of 228193644465 in words is "two hundred twenty-eight billion, one hundred ninety-three million, six hundred forty-four thousand, four hundred sixty-five".