23361857369 has 2 divisors, whose sum is σ = 23361857370. Its totient is φ = 23361857368.

The previous prime is 23361857357. The next prime is 23361857371. The reversal of 23361857369 is 96375816332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22776846400 + 585010969 = 150920^2 + 24187^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23361857369 is a prime.

It is a super-2 number, since 2×23361857369² (a number of 22 digits) contains 22 as substring.

Together with 23361857371, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23361857369.

It is not a weakly prime, because it can be changed into another prime (23361857069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11680928684 + 11680928685.

It is an arithmetic number, because the mean of its divisors is an integer number (11680928685).

Almost surely, 2^23361857369 is an apocalyptic number.

It is an amenable number.

23361857369 is a deficient number, since it is larger than the sum of its proper divisors (1).

23361857369 is an equidigital number, since it uses as much as digits as its factorization.

23361857369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 53.

The spelling of 23361857369 in words is "twenty-three billion, three hundred sixty-one million, eight hundred fifty-seven thousand, three hundred sixty-nine".