67680446971 has 4 divisors (see below), whose sum is σ = 71661649752. Its totient is φ = 63699244192.

The previous prime is 67680446959. The next prime is 67680447053. The reversal of 67680446971 is 17964408676.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 67680446971 - 2¹⁹ = 67679922683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67680446671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1990601365 + ... + 1990601398.

It is an arithmetic number, because the mean of its divisors is an integer number (17915412438).

Almost surely, 2^67680446971 is an apocalyptic number.

67680446971 is a deficient number, since it is larger than the sum of its proper divisors (3981202781).

67680446971 is a wasteful number, since it uses less digits than its factorization.

67680446971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3981202780.

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 67680446971 in words is "sixty-seven billion, six hundred eighty million, four hundred forty-six thousand, nine hundred seventy-one".