1268205544068 has 24 divisors (see below), whose sum is σ = 2968481124672. Its totient is φ = 421401630624.

The previous prime is 1268205544061. The next prime is 1268205544069. The reversal of 1268205544068 is 8604455028621.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1268205544068.

It is not an unprimeable number, because it can be changed into a prime (1268205544061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166689880 + ... + 166697487.

It is an arithmetic number, because the mean of its divisors is an integer number (123686713528).

Almost surely, 2^{1268205544068} is an apocalyptic number.

It is an amenable number.

1268205544068 is an abundant number, since it is smaller than the sum of its proper divisors (1700275580604).

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

1268205544068 is a wasteful number, since it uses less digits than its factorization.

1268205544068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333387691 (or 333387689 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 51.

The spelling of 1268205544068 in words is "one trillion, two hundred sixty-eight billion, two hundred five million, five hundred forty-four thousand, sixty-eight".