67400740663 has 2 divisors, whose sum is σ = 67400740664. Its totient is φ = 67400740662.

The previous prime is 67400740621. The next prime is 67400740679. The reversal of 67400740663 is 36604700476.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67400740663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67400740063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33700370331 + 33700370332.

It is an arithmetic number, because the mean of its divisors is an integer number (33700370332).

Almost surely, 2^67400740663 is an apocalyptic number.

67400740663 is a deficient number, since it is larger than the sum of its proper divisors (1).

67400740663 is an equidigital number, since it uses as much as digits as its factorization.

67400740663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 43.

The spelling of 67400740663 in words is "sixty-seven billion, four hundred million, seven hundred forty thousand, six hundred sixty-three".