1268895068978 has 8 divisors (see below), whose sum is σ = 1904152199040. Its totient is φ = 634177669300.

The previous prime is 1268895068977. The next prime is 1268895068989. The reversal of 1268895068978 is 8798605988621.

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

It is a super-2 number, since 2×1268895068978² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1268895068899 and 1268895068908.

It is not an unprimeable number, because it can be changed into a prime (1268895068977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134926718 + ... + 134936121.

It is an arithmetic number, because the mean of its divisors is an integer number (238019024880).

Almost surely, 2^{1268895068978} is an apocalyptic number.

1268895068978 is a deficient number, since it is larger than the sum of its proper divisors (635257130062).

1268895068978 is a wasteful number, since it uses less digits than its factorization.

1268895068978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269865192.

The product of its (nonzero) digits is 836075520, while the sum is 77.

The spelling of 1268895068978 in words is "one trillion, two hundred sixty-eight billion, eight hundred ninety-five million, sixty-eight thousand, nine hundred seventy-eight".