23643377455427 has 2 divisors, whose sum is σ = 23643377455428. Its totient is φ = 23643377455426.

The previous prime is 23643377455381. The next prime is 23643377455429. The reversal of 23643377455427 is 72455477334632.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23643377455427 - 2²⁴ = 23643360678211 is a prime.

Together with 23643377455429, 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 23643377455427.

It is not a weakly prime, because it can be changed into another prime (23643377455429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11821688727713 + 11821688727714.

It is an arithmetic number, because the mean of its divisors is an integer number (11821688727714).

Almost surely, 2^{23643377455427} is an apocalyptic number.

23643377455427 is a deficient number, since it is larger than the sum of its proper divisors (1).

23643377455427 is an equidigital number, since it uses as much as digits as its factorization.

23643377455427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 355622400, while the sum is 62.

The spelling of 23643377455427 in words is "twenty-three trillion, six hundred forty-three billion, three hundred seventy-seven million, four hundred fifty-five thousand, four hundred twenty-seven".