22755767891 has 2 divisors, whose sum is σ = 22755767892. Its totient is φ = 22755767890.

The previous prime is 22755767813. The next prime is 22755767927. The reversal of 22755767891 is 19876755722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22755767891 - 2²² = 22751573587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22755767891.

It is not a weakly prime, because it can be changed into another prime (22755760891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11377883945 + 11377883946.

It is an arithmetic number, because the mean of its divisors is an integer number (11377883946).

Almost surely, 2^22755767891 is an apocalyptic number.

22755767891 is a deficient number, since it is larger than the sum of its proper divisors (1).

22755767891 is an equidigital number, since it uses as much as digits as its factorization.

22755767891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14817600, while the sum is 59.

The spelling of 22755767891 in words is "twenty-two billion, seven hundred fifty-five million, seven hundred sixty-seven thousand, eight hundred ninety-one".