76776481803887 has 2 divisors, whose sum is σ = 76776481803888. Its totient is φ = 76776481803886.

The previous prime is 76776481803851. The next prime is 76776481803919. The reversal of 76776481803887 is 78830818467767.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76776481803887 - 2¹⁶ = 76776481738351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76776481803487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38388240901943 + 38388240901944.

It is an arithmetic number, because the mean of its divisors is an integer number (38388240901944).

Almost surely, 2^{76776481803887} is an apocalyptic number.

76776481803887 is a deficient number, since it is larger than the sum of its proper divisors (1).

76776481803887 is an equidigital number, since it uses as much as digits as its factorization.

76776481803887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4248502272, while the sum is 80.

The spelling of 76776481803887 in words is "seventy-six trillion, seven hundred seventy-six billion, four hundred eighty-one million, eight hundred three thousand, eight hundred eighty-seven".