22863556849 has 9 divisors (see below), whose sum is σ = 26597613771. Its totient is φ = 19596427200.

The previous prime is 22863556799. The next prime is 22863556873. The reversal of 22863556849 is 94865536822.

The square root of 22863556849 is 151207.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 20489918449 + 2373638400 = 143143^2 + 48720^2 .

It is not a de Polignac number, because 22863556849 - 2¹¹ = 22863554801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22863556793 and 22863556802.

It is not an unprimeable number, because it can be changed into a prime (22863553849) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1047649 + ... + 1069249.

It is an arithmetic number, because the mean of its divisors is an integer number (2955290419).

Almost surely, 2^22863556849 is an apocalyptic number.

22863556849 is the 151207-th square number.

22863556849 is the 75604-th centered octagonal number.

It is an amenable number.

22863556849 is a deficient number, since it is larger than the sum of its proper divisors (3734056922).

22863556849 is an frugal number, since it uses more digits than its factorization.

22863556849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43216 (or 21608 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 58.

The spelling of 22863556849 in words is "twenty-two billion, eight hundred sixty-three million, five hundred fifty-six thousand, eight hundred forty-nine".