68140980866 has 64 divisors (see below), whose sum is σ = 128798208000. Its totient is φ = 26362138176.

The previous prime is 68140980823. The next prime is 68140980899. The reversal of 68140980866 is 66808904186.

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, 1587860 + ... + 1630208.

It is an arithmetic number, because the mean of its divisors is an integer number (2012472000).

Almost surely, 2^68140980866 is an apocalyptic number.

68140980866 is a deficient number, since it is larger than the sum of its proper divisors (60657227134).

68140980866 is a wasteful number, since it uses less digits than its factorization.

68140980866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42663.

The product of its (nonzero) digits is 3981312, while the sum is 56.

The spelling of 68140980866 in words is "sixty-eight billion, one hundred forty million, nine hundred eighty thousand, eight hundred sixty-six".