76316042581 has 2 divisors, whose sum is σ = 76316042582. Its totient is φ = 76316042580.

The previous prime is 76316042527. The next prime is 76316042587. The reversal of 76316042581 is 18524061367.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56839328100 + 19476714481 = 238410^2 + 139559^2 .

It is a cyclic number.

It is not a de Polignac number, because 76316042581 - 2⁹ = 76316042069 is a prime.

It is a super-3 number, since 3×76316042581³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76316042587) 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, 38158021290 + 38158021291.

It is an arithmetic number, because the mean of its divisors is an integer number (38158021291).

Almost surely, 2^76316042581 is an apocalyptic number.

It is an amenable number.

76316042581 is a deficient number, since it is larger than the sum of its proper divisors (1).

76316042581 is an equidigital number, since it uses as much as digits as its factorization.

76316042581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 76316042581 in words is "seventy-six billion, three hundred sixteen million, forty-two thousand, five hundred eighty-one".