27238664723 has 2 divisors, whose sum is σ = 27238664724. Its totient is φ = 27238664722.

The previous prime is 27238664701. The next prime is 27238664731. The reversal of 27238664723 is 32746683272.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27238664723 - 2¹⁶ = 27238599187 is a prime.

It is not a weakly prime, because it can be changed into another prime (27238660723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13619332361 + 13619332362.

It is an arithmetic number, because the mean of its divisors is an integer number (13619332362).

Almost surely, 2^27238664723 is an apocalyptic number.

27238664723 is a deficient number, since it is larger than the sum of its proper divisors (1).

27238664723 is an equidigital number, since it uses as much as digits as its factorization.

27238664723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 50.

The spelling of 27238664723 in words is "twenty-seven billion, two hundred thirty-eight million, six hundred sixty-four thousand, seven hundred twenty-three".