23855887421719 has 2 divisors, whose sum is σ = 23855887421720. Its totient is φ = 23855887421718.

The previous prime is 23855887421699. The next prime is 23855887421767. The reversal of 23855887421719 is 91712478855832.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23855887421719 is a prime.

It is a super-2 number, since 2×23855887421719² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23855887427719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11927943710859 + 11927943710860.

It is an arithmetic number, because the mean of its divisors is an integer number (11927943710860).

Almost surely, 2^{23855887421719} is an apocalyptic number.

23855887421719 is a deficient number, since it is larger than the sum of its proper divisors (1).

23855887421719 is an equidigital number, since it uses as much as digits as its factorization.

23855887421719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270950400, while the sum is 70.

The spelling of 23855887421719 in words is "twenty-three trillion, eight hundred fifty-five billion, eight hundred eighty-seven million, four hundred twenty-one thousand, seven hundred nineteen".