84137536577 has 2 divisors, whose sum is σ = 84137536578. Its totient is φ = 84137536576.

The previous prime is 84137536541. The next prime is 84137536597. The reversal of 84137536577 is 77563573148.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63381083536 + 20756453041 = 251756^2 + 144071^2 .

It is a cyclic number.

It is not a de Polignac number, because 84137536577 - 2⁶ = 84137536513 is a prime.

It is a super-2 number, since 2×84137536577² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84137536507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42068768288 + 42068768289.

It is an arithmetic number, because the mean of its divisors is an integer number (42068768289).

Almost surely, 2^84137536577 is an apocalyptic number.

It is an amenable number.

84137536577 is a deficient number, since it is larger than the sum of its proper divisors (1).

84137536577 is an equidigital number, since it uses as much as digits as its factorization.

84137536577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14817600, while the sum is 56.

The spelling of 84137536577 in words is "eighty-four billion, one hundred thirty-seven million, five hundred thirty-six thousand, five hundred seventy-seven".