22261726989 has 16 divisors (see below), whose sum is σ = 33871698240. Its totient is φ = 14440038480.

The previous prime is 22261726973. The next prime is 22261726999. The reversal of 22261726989 is 98962716222.

It is not a de Polignac number, because 22261726989 - 2⁴ = 22261726973 is a prime.

It is a super-2 number, since 2×22261726989² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22261726999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11141007 + ... + 11143004.

It is an arithmetic number, because the mean of its divisors is an integer number (2116981140).

Almost surely, 2^22261726989 is an apocalyptic number.

It is an amenable number.

22261726989 is a deficient number, since it is larger than the sum of its proper divisors (11609971251).

22261726989 is a wasteful number, since it uses less digits than its factorization.

22261726989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22284057 (or 22284051 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The spelling of 22261726989 in words is "twenty-two billion, two hundred sixty-one million, seven hundred twenty-six thousand, nine hundred eighty-nine".