38781114256831 has 2 divisors, whose sum is σ = 38781114256832. Its totient is φ = 38781114256830.

The previous prime is 38781114256817. The next prime is 38781114256861. The reversal of 38781114256831 is 13865241118783.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38781114256831 - 2²³ = 38781105868223 is a prime.

It is a super-2 number, since 2×38781114256831² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38781114256861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19390557128415 + 19390557128416.

It is an arithmetic number, because the mean of its divisors is an integer number (19390557128416).

Almost surely, 2^{38781114256831} is an apocalyptic number.

38781114256831 is a deficient number, since it is larger than the sum of its proper divisors (1).

38781114256831 is an equidigital number, since it uses as much as digits as its factorization.

38781114256831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7741440, while the sum is 58.

The spelling of 38781114256831 in words is "thirty-eight trillion, seven hundred eighty-one billion, one hundred fourteen million, two hundred fifty-six thousand, eight hundred thirty-one".