22447454978 has 16 divisors (see below), whose sum is σ = 36546800640. Its totient is φ = 10278784656.

The previous prime is 22447454963. The next prime is 22447454983. The reversal of 22447454978 is 87945474422.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3395768 + ... + 3402371.

It is an arithmetic number, because the mean of its divisors is an integer number (2284175040).

Almost surely, 2^22447454978 is an apocalyptic number.

22447454978 is a deficient number, since it is larger than the sum of its proper divisors (14099345662).

22447454978 is a wasteful number, since it uses less digits than its factorization.

22447454978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6798281.

The product of its digits is 18063360, while the sum is 56.

The spelling of 22447454978 in words is "twenty-two billion, four hundred forty-seven million, four hundred fifty-four thousand, nine hundred seventy-eight".