1068978905385 has 32 divisors (see below), whose sum is σ = 1769574522240. Its totient is φ = 550391106048.

The previous prime is 1068978905299. The next prime is 1068978905437. The reversal of 1068978905385 is 5835098798601.

It is not a de Polignac number, because 1068978905385 - 2¹⁴ = 1068978889001 is a prime.

It is a super-2 number, since 2×1068978905385² (a number of 25 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 3273237 + ... + 3584973.

It is an arithmetic number, because the mean of its divisors is an integer number (55299203820).

Almost surely, 2^{1068978905385} is an apocalyptic number.

1068978905385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1068978905385 is a deficient number, since it is larger than the sum of its proper divisors (700595616855).

1068978905385 is a wasteful number, since it uses less digits than its factorization.

1068978905385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319657.

The product of its (nonzero) digits is 130636800, while the sum is 69.

The spelling of 1068978905385 in words is "one trillion, sixty-eight billion, nine hundred seventy-eight million, nine hundred five thousand, three hundred eighty-five".