23643377455429 has 2 divisors, whose sum is σ = 23643377455430. Its totient is φ = 23643377455428.

The previous prime is 23643377455427. The next prime is 23643377455457. The reversal of 23643377455429 is 92455477334632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14373940524804 + 9269436930625 = 3791298^2 + 3044575^2 .

It is a cyclic number.

It is not a de Polignac number, because 23643377455429 - 2¹ = 23643377455427 is a prime.

Together with 23643377455427, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23643377455427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11821688727714 + 11821688727715.

It is an arithmetic number, because the mean of its divisors is an integer number (11821688727715).

Almost surely, 2^{23643377455429} is an apocalyptic number.

It is an amenable number.

23643377455429 is a deficient number, since it is larger than the sum of its proper divisors (1).

23643377455429 is an equidigital number, since it uses as much as digits as its factorization.

23643377455429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 457228800, while the sum is 64.

The spelling of 23643377455429 in words is "twenty-three trillion, six hundred forty-three billion, three hundred seventy-seven million, four hundred fifty-five thousand, four hundred twenty-nine".