222722788644 has 24 divisors (see below), whose sum is σ = 577429452320. Its totient is φ = 74240929512.

The previous prime is 222722788637. The next prime is 222722788693. The reversal of 222722788644 is 446887227222.

222722788644 is a `hidden beast` number, since 22 + 272 + 278 + 86 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1031123914 + ... + 1031124129.

Almost surely, 2^222722788644 is an apocalyptic number.

It is an amenable number.

222722788644 is an abundant number, since it is smaller than the sum of its proper divisors (354706663676).

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

222722788644 is a wasteful number, since it uses less digits than its factorization.

222722788644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062248056 (or 2062248048 counting only the distinct ones).

The product of its digits is 9633792, while the sum is 54.

The spelling of 222722788644 in words is "two hundred twenty-two billion, seven hundred twenty-two million, seven hundred eighty-eight thousand, six hundred forty-four".