268742400556 has 24 divisors (see below), whose sum is σ = 538798967840. Its totient is φ = 114893707392.

The previous prime is 268742400533. The next prime is 268742400559. The reversal of 268742400556 is 655004247862.

268742400556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (268742400559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11721975 + ... + 11744878.

Almost surely, 2^268742400556 is an apocalyptic number.

It is an amenable number.

268742400556 is an abundant number, since it is smaller than the sum of its proper divisors (270056567284).

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

268742400556 is a wasteful number, since it uses less digits than its factorization.

268742400556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23467273 (or 23467271 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 49.

The spelling of 268742400556 in words is "two hundred sixty-eight billion, seven hundred forty-two million, four hundred thousand, five hundred fifty-six".