67780623919 has 2 divisors, whose sum is σ = 67780623920. Its totient is φ = 67780623918.

The previous prime is 67780623917. The next prime is 67780624063. The reversal of 67780623919 is 91932608776.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67780623919 - 2¹ = 67780623917 is a prime.

It is a super-2 number, since 2×67780623919² (a number of 22 digits) contains 22 as substring.

Together with 67780623917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67780623913) 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, 33890311959 + 33890311960.

It is an arithmetic number, because the mean of its divisors is an integer number (33890311960).

Almost surely, 2^67780623919 is an apocalyptic number.

67780623919 is a deficient number, since it is larger than the sum of its proper divisors (1).

67780623919 is an equidigital number, since it uses as much as digits as its factorization.

67780623919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 67780623919 in words is "sixty-seven billion, seven hundred eighty million, six hundred twenty-three thousand, nine hundred nineteen".