67880968665 has 32 divisors (see below), whose sum is σ = 110950684416. Its totient is φ = 35428834560.

The previous prime is 67880968637. The next prime is 67880968709. The reversal of 67880968665 is 56686908876.

It is not a de Polignac number, because 67880968665 - 2¹⁰ = 67880967641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67880968665.

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, 8037 + ... + 368546.

It is an arithmetic number, because the mean of its divisors is an integer number (3467208888).

Almost surely, 2^67880968665 is an apocalyptic number.

It is an amenable number.

67880968665 is a deficient number, since it is larger than the sum of its proper divisors (43069715751).

67880968665 is a wasteful number, since it uses less digits than its factorization.

67880968665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376849.

The product of its (nonzero) digits is 209018880, while the sum is 69.

The spelling of 67880968665 in words is "sixty-seven billion, eight hundred eighty million, nine hundred sixty-eight thousand, six hundred sixty-five".