38678424406399 has 2 divisors, whose sum is σ = 38678424406400. Its totient is φ = 38678424406398.

The previous prime is 38678424406397. The next prime is 38678424406421. The reversal of 38678424406399 is 99360442487683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38678424406399 - 2¹ = 38678424406397 is a prime.

Together with 38678424406397, 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 (38678424406397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19339212203199 + 19339212203200.

It is an arithmetic number, because the mean of its divisors is an integer number (19339212203200).

Almost surely, 2^{38678424406399} is an apocalyptic number.

38678424406399 is a deficient number, since it is larger than the sum of its proper divisors (1).

38678424406399 is an equidigital number, since it uses as much as digits as its factorization.

38678424406399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1504935936, while the sum is 73.

The spelling of 38678424406399 in words is "thirty-eight trillion, six hundred seventy-eight billion, four hundred twenty-four million, four hundred six thousand, three hundred ninety-nine".