81183167060 has 24 divisors (see below), whose sum is σ = 170573850216. Its totient is φ = 32456276480.

The previous prime is 81183167041. The next prime is 81183167077. The reversal of 81183167060 is 6076138118.

It can be written as a sum of positive squares in 4 ways, for example, as 41496949264 + 39686217796 = 203708^2 + 199214^2 .

It is a super-2 number, since 2×81183167060² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 81183166999 and 81183167017.

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, 1022681 + ... + 1099200.

It is an arithmetic number, because the mean of its divisors is an integer number (7107243759).

Almost surely, 2^81183167060 is an apocalyptic number.

It is an amenable number.

81183167060 is an abundant number, since it is smaller than the sum of its proper divisors (89390683156).

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

81183167060 is a wasteful number, since it uses less digits than its factorization.

81183167060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123803 (or 2123801 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 81183167060 in words is "eighty-one billion, one hundred eighty-three million, one hundred sixty-seven thousand, sixty".