268906864709 has 4 divisors (see below), whose sum is σ = 307322131104. Its totient is φ = 230491598316.

The previous prime is 268906864693. The next prime is 268906864711. The reversal of 268906864709 is 907468609862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 268906864709 - 2⁴ = 268906864693 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 (268906864769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19207633187 + ... + 19207633200.

It is an arithmetic number, because the mean of its divisors is an integer number (76830532776).

Almost surely, 2^268906864709 is an apocalyptic number.

It is an amenable number.

268906864709 is a deficient number, since it is larger than the sum of its proper divisors (38415266395).

268906864709 is an equidigital number, since it uses as much as digits as its factorization.

268906864709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38415266394.

The product of its (nonzero) digits is 62705664, while the sum is 65.

The spelling of 268906864709 in words is "two hundred sixty-eight billion, nine hundred six million, eight hundred sixty-four thousand, seven hundred nine".