224539788978 has 54 divisors (see below), whose sum is σ = 494168931711. Its totient is φ = 73685254104.

The previous prime is 224539788973. The next prime is 224539789003. The reversal of 224539788978 is 879887935422.

224539788978 is a `hidden beast` number, since 2 + 2 + 4 + 539 + 7 + 8 + 89 + 7 + 8 = 666.

224539788978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 112269894489 + 112269894489 = 335067^2 + 335067^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=335067.

It is not an unprimeable number, because it can be changed into a prime (224539788973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 134696101 + ... + 134697767.

Almost surely, 2^224539788978 is an apocalyptic number.

224539788978 is an abundant number, since it is smaller than the sum of its proper divisors (269629142733).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

224539788978 is an frugal number, since it uses more digits than its factorization.

224539788978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3476 (or 1739 counting only the distinct ones).

The product of its digits is 487710720, while the sum is 72.

Multiplying 224539788978 by its sum of digits (72), we get a square (16166864806416 = 4020804²).

The spelling of 224539788978 in words is "two hundred twenty-four billion, five hundred thirty-nine million, seven hundred eighty-eight thousand, nine hundred seventy-eight".