84076075081 has 2 divisors, whose sum is σ = 84076075082. Its totient is φ = 84076075080.

The previous prime is 84076075073. The next prime is 84076075129. The reversal of 84076075081 is 18057067048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80698605625 + 3377469456 = 284075^2 + 58116^2 .

It is a cyclic number.

It is not a de Polignac number, because 84076075081 - 2³ = 84076075073 is a prime.

It is a super-2 number, since 2×84076075081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84076075051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42038037540 + 42038037541.

It is an arithmetic number, because the mean of its divisors is an integer number (42038037541).

Almost surely, 2^84076075081 is an apocalyptic number.

It is an amenable number.

84076075081 is a deficient number, since it is larger than the sum of its proper divisors (1).

84076075081 is an equidigital number, since it uses as much as digits as its factorization.

84076075081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 84076075081 in words is "eighty-four billion, seventy-six million, seventy-five thousand, eighty-one".