84137181134438 has 4 divisors (see below), whose sum is σ = 126205771701660. Its totient is φ = 42068590567218.

The previous prime is 84137181134437. The next prime is 84137181134459. The reversal of 84137181134438 is 83443118173148.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84137181134437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21034295283608 + ... + 21034295283611.

It is an arithmetic number, because the mean of its divisors is an integer number (31551442925415).

Almost surely, 2^{84137181134438} is an apocalyptic number.

84137181134438 is a deficient number, since it is larger than the sum of its proper divisors (42068590567222).

84137181134438 is a wasteful number, since it uses less digits than its factorization.

84137181134438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42068590567221.

The product of its digits is 6193152, while the sum is 56.

The spelling of 84137181134438 in words is "eighty-four trillion, one hundred thirty-seven billion, one hundred eighty-one million, one hundred thirty-four thousand, four hundred thirty-eight".