22278149975 has 6 divisors (see below), whose sum is σ = 27624906000. Its totient is φ = 17822519960.

The previous prime is 22278149947. The next prime is 22278149981. The reversal of 22278149975 is 57994187222.

It is not a de Polignac number, because 22278149975 - 2⁶ = 22278149911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22278149975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 445562975 + ... + 445563024.

It is an arithmetic number, because the mean of its divisors is an integer number (4604151000).

Almost surely, 2^22278149975 is an apocalyptic number.

22278149975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22278149975 is a deficient number, since it is larger than the sum of its proper divisors (5346756025).

22278149975 is an equidigital number, since it uses as much as digits as its factorization.

22278149975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891126009 (or 891126004 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 56.

The spelling of 22278149975 in words is "twenty-two billion, two hundred seventy-eight million, one hundred forty-nine thousand, nine hundred seventy-five".