1068640843215 has 32 divisors (see below), whose sum is σ = 1925433833472. Its totient is φ = 501415056000.

The previous prime is 1068640843213. The next prime is 1068640843229. The reversal of 1068640843215 is 5123480468601.

It is not a de Polignac number, because 1068640843215 - 2¹ = 1068640843213 is a prime.

It is a super-2 number, since 2×1068640843215² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068640843213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104456356 + ... + 104466585.

It is an arithmetic number, because the mean of its divisors is an integer number (60169807296).

Almost surely, 2^{1068640843215} is an apocalyptic number.

1068640843215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1068640843215 is a deficient number, since it is larger than the sum of its proper divisors (856792990257).

1068640843215 is a wasteful number, since it uses less digits than its factorization.

1068640843215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208922991.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 1068640843215 in words is "one trillion, sixty-eight billion, six hundred forty million, eight hundred forty-three thousand, two hundred fifteen".