268549090816 has 40 divisors (see below), whose sum is σ = 542105459280. Its totient is φ = 132890247168.

The previous prime is 268549090801. The next prime is 268549090853. The reversal of 268549090816 is 618090945862.

It is a super-2 number, since 2×268549090816² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2653996 + ... + 2753323.

It is an arithmetic number, because the mean of its divisors is an integer number (13552636482).

Almost surely, 2^268549090816 is an apocalyptic number.

It is an amenable number.

268549090816 is an abundant number, since it is smaller than the sum of its proper divisors (273556368464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268549090816 is an frugal number, since it uses more digits than its factorization.

268549090816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5407434 (or 5407418 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 268549090816 in words is "two hundred sixty-eight billion, five hundred forty-nine million, ninety thousand, eight hundred sixteen".