81040008306829 has 16 divisors (see below), whose sum is σ = 95208095916864. Its totient is φ = 68005419955200.

The previous prime is 81040008306799. The next prime is 81040008306841. The reversal of 81040008306829 is 92860380004018.

It is not a de Polignac number, because 81040008306829 - 2¹⁵ = 81040008274061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81040008306889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97876077 + ... + 98700589.

It is an arithmetic number, because the mean of its divisors is an integer number (5950505994804).

Almost surely, 2^{81040008306829} is an apocalyptic number.

It is an amenable number.

81040008306829 is a deficient number, since it is larger than the sum of its proper divisors (14168087610035).

81040008306829 is a wasteful number, since it uses less digits than its factorization.

81040008306829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511868.

The product of its (nonzero) digits is 663552, while the sum is 49.

The spelling of 81040008306829 in words is "eighty-one trillion, forty billion, eight million, three hundred six thousand, eight hundred twenty-nine".