23734878281 has 2 divisors, whose sum is σ = 23734878282. Its totient is φ = 23734878280.

The previous prime is 23734878257. The next prime is 23734878361. The reversal of 23734878281 is 18287843732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16580425225 + 7154453056 = 128765^2 + 84584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23734878281 is a prime.

It is a super-2 number, since 2×23734878281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23734878241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11867439140 + 11867439141.

It is an arithmetic number, because the mean of its divisors is an integer number (11867439141).

Almost surely, 2^23734878281 is an apocalyptic number.

It is an amenable number.

23734878281 is a deficient number, since it is larger than the sum of its proper divisors (1).

23734878281 is an equidigital number, since it uses as much as digits as its factorization.

23734878281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3612672, while the sum is 53.

The spelling of 23734878281 in words is "twenty-three billion, seven hundred thirty-four million, eight hundred seventy-eight thousand, two hundred eighty-one".