23645728474139 has 2 divisors, whose sum is σ = 23645728474140. Its totient is φ = 23645728474138.

The previous prime is 23645728474099. The next prime is 23645728474157. The reversal of 23645728474139 is 93147482754632.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23645728474139 - 2⁸ = 23645728473883 is a prime.

It is not a weakly prime, because it can be changed into another prime (23645728474169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11822864237069 + 11822864237070.

It is an arithmetic number, because the mean of its divisors is an integer number (11822864237070).

Almost surely, 2^{23645728474139} is an apocalyptic number.

23645728474139 is a deficient number, since it is larger than the sum of its proper divisors (1).

23645728474139 is an equidigital number, since it uses as much as digits as its factorization.

23645728474139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243855360, while the sum is 65.

The spelling of 23645728474139 in words is "twenty-three trillion, six hundred forty-five billion, seven hundred twenty-eight million, four hundred seventy-four thousand, one hundred thirty-nine".