81062324916 has 24 divisors (see below), whose sum is σ = 193758729024. Its totient is φ = 26361731520.

The previous prime is 81062324909. The next prime is 81062324947. The reversal of 81062324916 is 61942326018.

It is a super-2 number, since 2×81062324916² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 82379920 + ... + 82380903.

It is an arithmetic number, because the mean of its divisors is an integer number (8073280376).

Almost surely, 2^81062324916 is an apocalyptic number.

It is an amenable number.

81062324916 is an abundant number, since it is smaller than the sum of its proper divisors (112696404108).

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

81062324916 is a wasteful number, since it uses less digits than its factorization.

81062324916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164760871 (or 164760869 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 81062324916 in words is "eighty-one billion, sixty-two million, three hundred twenty-four thousand, nine hundred sixteen".