76776481803919 has 2 divisors, whose sum is σ = 76776481803920. Its totient is φ = 76776481803918.

The previous prime is 76776481803887. The next prime is 76776481803977. The reversal of 76776481803919 is 91930818467767.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (91930818467767) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76776481803919 - 2⁵ = 76776481803887 is a prime.

It is a super-2 number, since 2×76776481803919² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76776481803979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38388240901959 + 38388240901960.

It is an arithmetic number, because the mean of its divisors is an integer number (38388240901960).

Almost surely, 2^{76776481803919} is an apocalyptic number.

76776481803919 is a deficient number, since it is larger than the sum of its proper divisors (1).

76776481803919 is an equidigital number, since it uses as much as digits as its factorization.

76776481803919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768144384, while the sum is 76.

The spelling of 76776481803919 in words is "seventy-six trillion, seven hundred seventy-six billion, four hundred eighty-one million, eight hundred three thousand, nine hundred nineteen".