81675429244 has 12 divisors (see below), whose sum is σ = 143011376368. Its totient is φ = 40815036000.

The previous prime is 81675429203. The next prime is 81675429263. The reversal of 81675429244 is 44292457618.

It is a junction number, because it is equal to n+sod(n) for n = 81675429191 and 81675429200.

It is a congruent number.

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, 5661552 + ... + 5675959.

Almost surely, 2^81675429244 is an apocalyptic number.

It is an amenable number.

81675429244 is a deficient number, since it is larger than the sum of its proper divisors (61335947124).

81675429244 is a wasteful number, since it uses less digits than its factorization.

81675429244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11339316 (or 11339314 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 52.

The spelling of 81675429244 in words is "eighty-one billion, six hundred seventy-five million, four hundred twenty-nine thousand, two hundred forty-four".