228641454522545 has 4 divisors (see below), whose sum is σ = 274369745427060. Its totient is φ = 182913163618032.

The previous prime is 228641454522539. The next prime is 228641454522583. The reversal of 228641454522545 is 545225454146822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46450876678144 + 182190577844401 = 6815488^2 + 13497799^2 .

It is a cyclic number.

It is not a de Polignac number, because 228641454522545 - 2⁴⁰ = 227541942894769 is a prime.

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, 22864145452250 + ... + 22864145452259.

It is an arithmetic number, because the mean of its divisors is an integer number (68592436356765).

Almost surely, 2^{228641454522545} is an apocalyptic number.

It is an amenable number.

228641454522545 is a deficient number, since it is larger than the sum of its proper divisors (45728290904515).

228641454522545 is an equidigital number, since it uses as much as digits as its factorization.

228641454522545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45728290904514.

The product of its digits is 122880000, while the sum is 59.

The spelling of 228641454522545 in words is "two hundred twenty-eight trillion, six hundred forty-one billion, four hundred fifty-four million, five hundred twenty-two thousand, five hundred forty-five".