123416472191 has 2 divisors, whose sum is σ = 123416472192. Its totient is φ = 123416472190.

The previous prime is 123416472163. The next prime is 123416472227. The reversal of 123416472191 is 191274614321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123416472191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123416472121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61708236095 + 61708236096.

It is an arithmetic number, because the mean of its divisors is an integer number (61708236096).

Almost surely, 2^123416472191 is an apocalyptic number.

123416472191 is a deficient number, since it is larger than the sum of its proper divisors (1).

123416472191 is an equidigital number, since it uses as much as digits as its factorization.

123416472191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The spelling of 123416472191 in words is "one hundred twenty-three billion, four hundred sixteen million, four hundred seventy-two thousand, one hundred ninety-one".