68881331566 has 8 divisors (see below), whose sum is σ = 103543245000. Its totient is φ = 34366916568.

The previous prime is 68881331543. The next prime is 68881331567. The reversal of 68881331566 is 66513318886.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68881331567) 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, 36873441 + ... + 36875308.

It is an arithmetic number, because the mean of its divisors is an integer number (12942905625).

Almost surely, 2^68881331566 is an apocalyptic number.

68881331566 is a deficient number, since it is larger than the sum of its proper divisors (34661913434).

68881331566 is a wasteful number, since it uses less digits than its factorization.

68881331566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73749218.

The product of its digits is 4976640, while the sum is 55.

The spelling of 68881331566 in words is "sixty-eight billion, eight hundred eighty-one million, three hundred thirty-one thousand, five hundred sixty-six".