22261105647 has 24 divisors (see below), whose sum is σ = 35178670800. Its totient is φ = 13452900480.

The previous prime is 22261105639. The next prime is 22261105649. The reversal of 22261105647 is 74650116222.

It is a happy number.

22261105647 is a `hidden beast` number, since 2 + 2 + 2 + 6 + 1 + 1 + 0 + 5 + 647 = 666.

It is not a de Polignac number, because 22261105647 - 2³ = 22261105639 is a prime.

It is a super-3 number, since 3×22261105647³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22261105649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 287598 + ... + 356699.

It is an arithmetic number, because the mean of its divisors is an integer number (1465777950).

Almost surely, 2^22261105647 is an apocalyptic number.

22261105647 is a deficient number, since it is larger than the sum of its proper divisors (12917565153).

22261105647 is a wasteful number, since it uses less digits than its factorization.

22261105647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644663 (or 644660 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 22261105647 in words is "twenty-two billion, two hundred sixty-one million, one hundred five thousand, six hundred forty-seven".