22078441647 has 8 divisors (see below), whose sum is σ = 32708802480. Its totient is φ = 14718961080.

The previous prime is 22078441621. The next prime is 22078441667. The reversal of 22078441647 is 74614487022.

22078441647 is a `hidden beast` number, since 220 + 7 + 8 + 4 + 416 + 4 + 7 = 666.

It is not a de Polignac number, because 22078441647 - 2⁷ = 22078441519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22078441667) 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 7 ways as a sum of consecutive naturals, for example, 408860004 + ... + 408860057.

It is an arithmetic number, because the mean of its divisors is an integer number (4088600310).

Almost surely, 2^22078441647 is an apocalyptic number.

22078441647 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22078441647 is a deficient number, since it is larger than the sum of its proper divisors (10630360833).

22078441647 is an equidigital number, since it uses as much as digits as its factorization.

22078441647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817720070 (or 817720064 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The spelling of 22078441647 in words is "twenty-two billion, seventy-eight million, four hundred forty-one thousand, six hundred forty-seven".