22180974787 has 2 divisors, whose sum is σ = 22180974788. Its totient is φ = 22180974786.

The previous prime is 22180974749. The next prime is 22180974793. The reversal of 22180974787 is 78747908122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22180974787 - 2⁷ = 22180974659 is a prime.

It is not a weakly prime, because it can be changed into another prime (22180974727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11090487393 + 11090487394.

It is an arithmetic number, because the mean of its divisors is an integer number (11090487394).

Almost surely, 2^22180974787 is an apocalyptic number.

22180974787 is a deficient number, since it is larger than the sum of its proper divisors (1).

22180974787 is an equidigital number, since it uses as much as digits as its factorization.

22180974787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3161088, while the sum is 55.

The spelling of 22180974787 in words is "twenty-two billion, one hundred eighty million, nine hundred seventy-four thousand, seven hundred eighty-seven".