68894091215 has 16 divisors (see below), whose sum is σ = 83531831040. Its totient is φ = 54543187200.

The previous prime is 68894091163. The next prime is 68894091229. The reversal of 68894091215 is 51219049886.

It is not a de Polignac number, because 68894091215 - 2⁶ = 68894091151 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1047266 + ... + 1111104.

It is an arithmetic number, because the mean of its divisors is an integer number (5220739440).

Almost surely, 2^68894091215 is an apocalyptic number.

68894091215 is a deficient number, since it is larger than the sum of its proper divisors (14637739825).

68894091215 is a wasteful number, since it uses less digits than its factorization.

68894091215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66082.

The product of its (nonzero) digits is 1244160, while the sum is 53.

The spelling of 68894091215 in words is "sixty-eight billion, eight hundred ninety-four million, ninety-one thousand, two hundred fifteen".