76438389871 has 2 divisors, whose sum is σ = 76438389872. Its totient is φ = 76438389870.

The previous prime is 76438389791. The next prime is 76438389949. The reversal of 76438389871 is 17898383467.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76438389871 - 2⁷ = 76438389743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76438389971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38219194935 + 38219194936.

It is an arithmetic number, because the mean of its divisors is an integer number (38219194936).

Almost surely, 2^76438389871 is an apocalyptic number.

76438389871 is a deficient number, since it is larger than the sum of its proper divisors (1).

76438389871 is an equidigital number, since it uses as much as digits as its factorization.

76438389871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48771072, while the sum is 64.

The spelling of 76438389871 in words is "seventy-six billion, four hundred thirty-eight million, three hundred eighty-nine thousand, eight hundred seventy-one".