268561490542 has 8 divisors (see below), whose sum is σ = 402882187032. Its totient is φ = 134267428200.

The previous prime is 268561490513. The next prime is 268561490557. The reversal of 268561490542 is 245094165862.

268561490542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 268561490542.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6633309 + ... + 6673672.

It is an arithmetic number, because the mean of its divisors is an integer number (50360273379).

Almost surely, 2^268561490542 is an apocalyptic number.

268561490542 is a deficient number, since it is larger than the sum of its proper divisors (134320696490).

268561490542 is a wasteful number, since it uses less digits than its factorization.

268561490542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13317074.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 268561490542 in words is "two hundred sixty-eight billion, five hundred sixty-one million, four hundred ninety thousand, five hundred forty-two".