268780869591 has 32 divisors (see below), whose sum is σ = 387078048000. Its totient is φ = 164917091328.

The previous prime is 268780869587. The next prime is 268780869593. The reversal of 268780869591 is 195968087862.

It is not a de Polignac number, because 268780869591 - 2² = 268780869587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268780869593) 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 31 ways as a sum of consecutive naturals, for example, 40179175 + ... + 40185863.

It is an arithmetic number, because the mean of its divisors is an integer number (12096189000).

Almost surely, 2^268780869591 is an apocalyptic number.

268780869591 is a deficient number, since it is larger than the sum of its proper divisors (118297178409).

268780869591 is a wasteful number, since it uses less digits than its factorization.

268780869591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9583.

The product of its (nonzero) digits is 104509440, while the sum is 69.

The spelling of 268780869591 in words is "two hundred sixty-eight billion, seven hundred eighty million, eight hundred sixty-nine thousand, five hundred ninety-one".