22691860871 has 2 divisors, whose sum is σ = 22691860872. Its totient is φ = 22691860870.

The previous prime is 22691860771. The next prime is 22691860889. The reversal of 22691860871 is 17806819622.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22691860871 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22691860771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11345930435 + 11345930436.

It is an arithmetic number, because the mean of its divisors is an integer number (11345930436).

Almost surely, 2^22691860871 is an apocalyptic number.

22691860871 is a deficient number, since it is larger than the sum of its proper divisors (1).

22691860871 is an equidigital number, since it uses as much as digits as its factorization.

22691860871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 50.

The spelling of 22691860871 in words is "twenty-two billion, six hundred ninety-one million, eight hundred sixty thousand, eight hundred seventy-one".