23278711663 has 2 divisors, whose sum is σ = 23278711664. Its totient is φ = 23278711662.

The previous prime is 23278711649. The next prime is 23278711681. The reversal of 23278711663 is 36611787232.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23278711663 - 2⁹ = 23278711151 is a prime.

It is a super-3 number, since 3×23278711663³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23278781663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11639355831 + 11639355832.

It is an arithmetic number, because the mean of its divisors is an integer number (11639355832).

Almost surely, 2^23278711663 is an apocalyptic number.

23278711663 is a deficient number, since it is larger than the sum of its proper divisors (1).

23278711663 is an equidigital number, since it uses as much as digits as its factorization.

23278711663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 46.

The spelling of 23278711663 in words is "twenty-three billion, two hundred seventy-eight million, seven hundred eleven thousand, six hundred sixty-three".