84137181134437 has 2 divisors, whose sum is σ = 84137181134438. Its totient is φ = 84137181134436.

The previous prime is 84137181134429. The next prime is 84137181134459. The reversal of 84137181134437 is 73443118173148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82621391716161 + 1515789418276 = 9089631^2 + 1231174^2 .

It is a cyclic number.

It is not a de Polignac number, because 84137181134437 - 2³ = 84137181134429 is a prime.

It is a super-2 number, since 2×84137181134437² (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 (84137181134467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42068590567218 + 42068590567219.

It is an arithmetic number, because the mean of its divisors is an integer number (42068590567219).

Almost surely, 2^{84137181134437} is an apocalyptic number.

It is an amenable number.

84137181134437 is a deficient number, since it is larger than the sum of its proper divisors (1).

84137181134437 is an equidigital number, since it uses as much as digits as its factorization.

84137181134437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5419008, while the sum is 55.

The spelling of 84137181134437 in words is "eighty-four trillion, one hundred thirty-seven billion, one hundred eighty-one million, one hundred thirty-four thousand, four hundred thirty-seven".