22691367871 has 4 divisors (see below), whose sum is σ = 22791330072. Its totient is φ = 22591405672.

The previous prime is 22691367859. The next prime is 22691367917. The reversal of 22691367871 is 17876319622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22691367871 - 2⁹ = 22691367359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22691367851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49980760 + ... + 49981213.

It is an arithmetic number, because the mean of its divisors is an integer number (5697832518).

Almost surely, 2^22691367871 is an apocalyptic number.

22691367871 is a deficient number, since it is larger than the sum of its proper divisors (99962201).

22691367871 is an equidigital number, since it uses as much as digits as its factorization.

22691367871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99962200.

The product of its digits is 1524096, while the sum is 52.

The spelling of 22691367871 in words is "twenty-two billion, six hundred ninety-one million, three hundred sixty-seven thousand, eight hundred seventy-one".