23668218947 has 2 divisors, whose sum is σ = 23668218948. Its totient is φ = 23668218946.

The previous prime is 23668218919. The next prime is 23668218961. The reversal of 23668218947 is 74981286632.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23668218947 - 2¹⁴ = 23668202563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23668218892 and 23668218901.

It is not a weakly prime, because it can be changed into another prime (23668218997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11834109473 + 11834109474.

It is an arithmetic number, because the mean of its divisors is an integer number (11834109474).

Almost surely, 2^23668218947 is an apocalyptic number.

23668218947 is a deficient number, since it is larger than the sum of its proper divisors (1).

23668218947 is an equidigital number, since it uses as much as digits as its factorization.

23668218947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 56.

The spelling of 23668218947 in words is "twenty-three billion, six hundred sixty-eight million, two hundred eighteen thousand, nine hundred forty-seven".