268906837747 has 2 divisors, whose sum is σ = 268906837748. Its totient is φ = 268906837746.

The previous prime is 268906837739. The next prime is 268906837769. The reversal of 268906837747 is 747738609862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268906837747 - 2³ = 268906837739 is a prime.

It is not a weakly prime, because it can be changed into another prime (268906837547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134453418873 + 134453418874.

It is an arithmetic number, because the mean of its divisors is an integer number (134453418874).

Almost surely, 2^268906837747 is an apocalyptic number.

268906837747 is a deficient number, since it is larger than the sum of its proper divisors (1).

268906837747 is an equidigital number, since it uses as much as digits as its factorization.

268906837747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170698752, while the sum is 67.

The spelling of 268906837747 in words is "two hundred sixty-eight billion, nine hundred six million, eight hundred thirty-seven thousand, seven hundred forty-seven".