67920783659 has 2 divisors, whose sum is σ = 67920783660. Its totient is φ = 67920783658.

The previous prime is 67920783643. The next prime is 67920783661. The reversal of 67920783659 is 95638702976.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67920783659 - 2⁴ = 67920783643 is a prime.

It is a super-2 number, since 2×67920783659² (a number of 22 digits) contains 22 as substring.

Together with 67920783661, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67920783559) by changing a digit.

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 as a sum of consecutive naturals, namely, 33960391829 + 33960391830.

It is an arithmetic number, because the mean of its divisors is an integer number (33960391830).

Almost surely, 2^67920783659 is an apocalyptic number.

67920783659 is a deficient number, since it is larger than the sum of its proper divisors (1).

67920783659 is an equidigital number, since it uses as much as digits as its factorization.

67920783659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34292160, while the sum is 62.

The spelling of 67920783659 in words is "sixty-seven billion, nine hundred twenty million, seven hundred eighty-three thousand, six hundred fifty-nine".