22261601444 has 6 divisors (see below), whose sum is σ = 38957802534. Its totient is φ = 11130800720.

The previous prime is 22261601443. The next prime is 22261601447. The reversal of 22261601444 is 44410616222.

It can be written as a sum of positive squares in only one way, i.e., 21400178944 + 861422500 = 146288^2 + 29350^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22261601444.

It is not an unprimeable number, because it can be changed into a prime (22261601443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2782700177 + ... + 2782700184.

It is an arithmetic number, because the mean of its divisors is an integer number (6492967089).

Almost surely, 2^22261601444 is an apocalyptic number.

It is an amenable number.

22261601444 is a deficient number, since it is larger than the sum of its proper divisors (16696201090).

22261601444 is a wasteful number, since it uses less digits than its factorization.

22261601444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565400365 (or 5565400363 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 22261601444 in words is "twenty-two billion, two hundred sixty-one million, six hundred one thousand, four hundred forty-four".