81003600830 has 16 divisors (see below), whose sum is σ = 145809727344. Its totient is φ = 32400719040.

The previous prime is 81003600817. The next prime is 81003600859. The reversal of 81003600830 is 3800630018.

It is a junction number, because it is equal to n+sod(n) for n = 81003600793 and 81003600802.

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, 800165 + ... + 895695.

It is an arithmetic number, because the mean of its divisors is an integer number (9113107959).

Almost surely, 2^81003600830 is an apocalyptic number.

81003600830 is a deficient number, since it is larger than the sum of its proper divisors (64806126514).

81003600830 is a wasteful number, since it uses less digits than its factorization.

81003600830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180331.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 81003600830 in words is "eighty-one billion, three million, six hundred thousand, eight hundred thirty".