1268935888616 has 64 divisors (see below), whose sum is σ = 2766026465280. Its totient is φ = 539972678080.

The previous prime is 1268935888603. The next prime is 1268935888643. The reversal of 1268935888616 is 6168885398621.

It is a super-2 number, since 2×1268935888616² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1268935888616.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6574496 + ... + 6764751.

It is an arithmetic number, because the mean of its divisors is an integer number (43219163520).

Almost surely, 2^{1268935888616} is an apocalyptic number.

It is an amenable number.

1268935888616 is an abundant number, since it is smaller than the sum of its proper divisors (1497090576664).

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

1268935888616 is a wasteful number, since it uses less digits than its factorization.

1268935888616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13339334 (or 13339330 counting only the distinct ones).

The product of its digits is 238878720, while the sum is 71.

The spelling of 1268935888616 in words is "one trillion, two hundred sixty-eight billion, nine hundred thirty-five million, eight hundred eighty-eight thousand, six hundred sixteen".