22044556278 has 24 divisors (see below), whose sum is σ = 47769069816. Its totient is φ = 7347283200.

The previous prime is 22044556271. The next prime is 22044556283. The reversal of 22044556278 is 87265544022.

22044556278 is a `hidden beast` number, since 2 + 20 + 4 + 4 + 556 + 2 + 78 = 666.

It is a super-2 number, since 2×22044556278² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22044556271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84673 + ... + 226403.

It is an arithmetic number, because the mean of its divisors is an integer number (1990377909).

Almost surely, 2^22044556278 is an apocalyptic number.

22044556278 is an abundant number, since it is smaller than the sum of its proper divisors (25724513538).

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

22044556278 is a wasteful number, since it uses less digits than its factorization.

22044556278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150380 (or 150377 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 45.

The spelling of 22044556278 in words is "twenty-two billion, forty-four million, five hundred fifty-six thousand, two hundred seventy-eight".