81134433037 has 8 divisors (see below), whose sum is σ = 92734661376. Its totient is φ = 69536603472.

The previous prime is 81134432999. The next prime is 81134433047. The reversal of 81134433037 is 73033443118.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-81134433037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81134432987 and 81134433005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81134433047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526618 + ... + 663019.

It is an arithmetic number, because the mean of its divisors is an integer number (11591832672).

Almost surely, 2^81134433037 is an apocalyptic number.

It is an amenable number.

81134433037 is a deficient number, since it is larger than the sum of its proper divisors (11600228339).

81134433037 is a wasteful number, since it uses less digits than its factorization.

81134433037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199387.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 81134433037 in words is "eighty-one billion, one hundred thirty-four million, four hundred thirty-three thousand, thirty-seven".