23934418381949 has 2 divisors, whose sum is σ = 23934418381950. Its totient is φ = 23934418381948.

The previous prime is 23934418381921. The next prime is 23934418381969. The reversal of 23934418381949 is 94918381443932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18723950185924 + 5210468196025 = 4327118^2 + 2282645^2 .

It is a cyclic number.

It is not a de Polignac number, because 23934418381949 - 2²⁰ = 23934417333373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23934418381969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11967209190974 + 11967209190975.

It is an arithmetic number, because the mean of its divisors is an integer number (11967209190975).

Almost surely, 2^{23934418381949} is an apocalyptic number.

It is an amenable number.

23934418381949 is a deficient number, since it is larger than the sum of its proper divisors (1).

23934418381949 is an equidigital number, since it uses as much as digits as its factorization.

23934418381949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161243136, while the sum is 68.

The spelling of 23934418381949 in words is "twenty-three trillion, nine hundred thirty-four billion, four hundred eighteen million, three hundred eighty-one thousand, nine hundred forty-nine".