22347093991 has 2 divisors, whose sum is σ = 22347093992. Its totient is φ = 22347093990.

The previous prime is 22347093947. The next prime is 22347094073. The reversal of 22347093991 is 19939074322.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22347093991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22347093191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11173546995 + 11173546996.

It is an arithmetic number, because the mean of its divisors is an integer number (11173546996).

Almost surely, 2^22347093991 is an apocalyptic number.

22347093991 is a deficient number, since it is larger than the sum of its proper divisors (1).

22347093991 is an equidigital number, since it uses as much as digits as its factorization.

22347093991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 49.

The spelling of 22347093991 in words is "twenty-two billion, three hundred forty-seven million, ninety-three thousand, nine hundred ninety-one".