268618109759 has 4 divisors (see below), whose sum is σ = 268620505704. Its totient is φ = 268615713816.

The previous prime is 268618109741. The next prime is 268618109791. The reversal of 268618109759 is 957901816862.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268618109759 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 (268618109659) 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, 1021097 + ... + 1256930.

It is an arithmetic number, because the mean of its divisors is an integer number (67155126426).

Almost surely, 2^268618109759 is an apocalyptic number.

268618109759 is a deficient number, since it is larger than the sum of its proper divisors (2395945).

268618109759 is a wasteful number, since it uses less digits than its factorization.

268618109759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395944.

The product of its (nonzero) digits is 13063680, while the sum is 62.

The spelling of 268618109759 in words is "two hundred sixty-eight billion, six hundred eighteen million, one hundred nine thousand, seven hundred fifty-nine".