70667089991 has 2 divisors, whose sum is σ = 70667089992. Its totient is φ = 70667089990.

The previous prime is 70667089981. The next prime is 70667089993. The reversal of 70667089991 is 19998076607.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70667089991 is a prime.

Together with 70667089993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70667089993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35333544995 + 35333544996.

It is an arithmetic number, because the mean of its divisors is an integer number (35333544996).

Almost surely, 2^70667089991 is an apocalyptic number.

70667089991 is a deficient number, since it is larger than the sum of its proper divisors (1).

70667089991 is an equidigital number, since it uses as much as digits as its factorization.

70667089991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10287648, while the sum is 62.

The spelling of 70667089991 in words is "seventy billion, six hundred sixty-seven million, eighty-nine thousand, nine hundred ninety-one".