22766097891 has 16 divisors (see below), whose sum is σ = 31900208384. Its totient is φ = 14423772384.

The previous prime is 22766097877. The next prime is 22766097919. The reversal of 22766097891 is 19879066722.

It is not a de Polignac number, because 22766097891 - 2¹⁷ = 22765966819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22766097841) 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, 2380111 + ... + 2389656.

It is an arithmetic number, because the mean of its divisors is an integer number (1993763024).

Almost surely, 2^22766097891 is an apocalyptic number.

22766097891 is a deficient number, since it is larger than the sum of its proper divisors (9134110493).

22766097891 is a wasteful number, since it uses less digits than its factorization.

22766097891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4769850.

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 22766097891 in words is "twenty-two billion, seven hundred sixty-six million, ninety-seven thousand, eight hundred ninety-one".