76786077491 has 2 divisors, whose sum is σ = 76786077492. Its totient is φ = 76786077490.

The previous prime is 76786077427. The next prime is 76786077497. The reversal of 76786077491 is 19477068767.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76786077491 - 2⁶ = 76786077427 is a prime.

It is a super-2 number, since 2×76786077491² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (76786077497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38393038745 + 38393038746.

It is an arithmetic number, because the mean of its divisors is an integer number (38393038746).

Almost surely, 2^76786077491 is an apocalyptic number.

76786077491 is a deficient number, since it is larger than the sum of its proper divisors (1).

76786077491 is an equidigital number, since it uses as much as digits as its factorization.

76786077491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24893568, while the sum is 62.

The spelling of 76786077491 in words is "seventy-six billion, seven hundred eighty-six million, seventy-seven thousand, four hundred ninety-one".