268836756909 has 16 divisors (see below), whose sum is σ = 433753423488. Its totient is φ = 144584474112.

The previous prime is 268836756907. The next prime is 268836756961. The reversal of 268836756909 is 909657638862.

It is not a de Polignac number, because 268836756909 - 2¹ = 268836756907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268836756901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376521712 + ... + 376522425.

It is an arithmetic number, because the mean of its divisors is an integer number (27109588968).

Almost surely, 2^268836756909 is an apocalyptic number.

It is an amenable number.

268836756909 is a deficient number, since it is larger than the sum of its proper divisors (164916666579).

268836756909 is a wasteful number, since it uses less digits than its factorization.

268836756909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753044164.

The product of its (nonzero) digits is 235146240, while the sum is 69.

The spelling of 268836756909 in words is "two hundred sixty-eight billion, eight hundred thirty-six million, seven hundred fifty-six thousand, nine hundred nine".