39766806139451 has 2 divisors, whose sum is σ = 39766806139452. Its totient is φ = 39766806139450.

The previous prime is 39766806139441. The next prime is 39766806139477. The reversal of 39766806139451 is 15493160866793.

39766806139451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 39766806139451 - 2¹⁰ = 39766806138427 is a prime.

It is not a weakly prime, because it can be changed into another prime (39766806139441) 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, 19883403069725 + 19883403069726.

It is an arithmetic number, because the mean of its divisors is an integer number (19883403069726).

Almost surely, 2^{39766806139451} is an apocalyptic number.

39766806139451 is a deficient number, since it is larger than the sum of its proper divisors (1).

39766806139451 is an equidigital number, since it uses as much as digits as its factorization.

39766806139451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 176359680, while the sum is 68.

The spelling of 39766806139451 in words is "thirty-nine trillion, seven hundred sixty-six billion, eight hundred six million, one hundred thirty-nine thousand, four hundred fifty-one".