2268961398840 has 64 divisors (see below), whose sum is σ = 6807021651360. Its totient is φ = 605044154880.

The previous prime is 2268961398749. The next prime is 2268961398881. The reversal of 2268961398840 is 488931698622.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6855570 + ... + 7178910.

Almost surely, 2^{2268961398840} is an apocalyptic number.

2268961398840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2268961398840 is an abundant number, since it is smaller than the sum of its proper divisors (4538060252520).

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

2268961398840 is a wasteful number, since it uses less digits than its factorization.

2268961398840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381832 (or 381828 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 66.

The spelling of 2268961398840 in words is "two trillion, two hundred sixty-eight billion, nine hundred sixty-one million, three hundred ninety-eight thousand, eight hundred forty".