81134433034 has 8 divisors (see below), whose sum is σ = 121710733668. Its totient is φ = 40564188480.

The previous prime is 81134432999. The next prime is 81134433047. The reversal of 81134433034 is 43033443118.

It can be written as a sum of positive squares in 2 ways, for example, as 44346042225 + 36788390809 = 210585^2 + 191803^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1480377 + ... + 1534204.

Almost surely, 2^81134433034 is an apocalyptic number.

81134433034 is a deficient number, since it is larger than the sum of its proper divisors (40576300634).

81134433034 is a wasteful number, since it uses less digits than its factorization.

81134433034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028040.

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 81134433034 in words is "eighty-one billion, one hundred thirty-four million, four hundred thirty-three thousand, thirty-four".