81302383830860 has 24 divisors (see below), whose sum is σ = 171160779144096. Its totient is φ = 32439853894400.

The previous prime is 81302383830853. The next prime is 81302383830907. The reversal of 81302383830860 is 6803838320318.

It is a super-2 number, since 2×81302383830860² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5068719152 + ... + 5068735191.

It is an arithmetic number, because the mean of its divisors is an integer number (7131699131004).

Almost surely, 2^{81302383830860} is an apocalyptic number.

It is an amenable number.

81302383830860 is an abundant number, since it is smaller than the sum of its proper divisors (89858395313236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81302383830860 is a wasteful number, since it uses less digits than its factorization.

81302383830860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10137454753 (or 10137454751 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 81302383830860 in words is "eighty-one trillion, three hundred two billion, three hundred eighty-three million, eight hundred thirty thousand, eight hundred sixty".