81413334008 has 8 divisors (see below), whose sum is σ = 152650001280. Its totient is φ = 40706667000.

The previous prime is 81413333987. The next prime is 81413334017. The reversal of 81413334008 is 80043331418.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5088333368 + ... + 5088333383.

It is an arithmetic number, because the mean of its divisors is an integer number (19081250160).

Almost surely, 2^81413334008 is an apocalyptic number.

It is an amenable number.

81413334008 is a deficient number, since it is larger than the sum of its proper divisors (71236667272).

81413334008 is a wasteful number, since it uses less digits than its factorization.

81413334008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10176666757 (or 10176666753 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 81413334008 in words is "eighty-one billion, four hundred thirteen million, three hundred thirty-four thousand, eight".