22748937561 has 96 divisors (see below), whose sum is σ = 39943507968. Its totient is φ = 12669359040.

The previous prime is 22748937559. The next prime is 22748937571. The reversal of 22748937561 is 16573984722.

It is a happy number.

22748937561 is a `hidden beast` number, since 2 + 2 + 7 + 48 + 9 + 37 + 561 = 666.

It is not a de Polignac number, because 22748937561 - 2¹ = 22748937559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22748937498 and 22748937507.

It is not an unprimeable number, because it can be changed into a prime (22748937511) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15054796 + ... + 15056306.

It is an arithmetic number, because the mean of its divisors is an integer number (416078208).

Almost surely, 2^22748937561 is an apocalyptic number.

22748937561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22748937561 is a deficient number, since it is larger than the sum of its proper divisors (17194570407).

22748937561 is a wasteful number, since it uses less digits than its factorization.

22748937561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753 (or 1741 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The spelling of 22748937561 in words is "twenty-two billion, seven hundred forty-eight million, nine hundred thirty-seven thousand, five hundred sixty-one".