268016909399 has 4 divisors (see below), whose sum is σ = 268024546464. Its totient is φ = 268009272336.

The previous prime is 268016909387. The next prime is 268016909473. The reversal of 268016909399 is 993909610862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 268016909399 - 2²⁸ = 267748473943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268016909359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3765647 + ... + 3836160.

It is an arithmetic number, because the mean of its divisors is an integer number (67006136616).

Almost surely, 2^268016909399 is an apocalyptic number.

268016909399 is a deficient number, since it is larger than the sum of its proper divisors (7637065).

268016909399 is an equidigital number, since it uses as much as digits as its factorization.

268016909399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7637064.

The product of its (nonzero) digits is 11337408, while the sum is 62.

The spelling of 268016909399 in words is "two hundred sixty-eight billion, sixteen million, nine hundred nine thousand, three hundred ninety-nine".