81835169030 has 16 divisors (see below), whose sum is σ = 147890174544. Its totient is φ = 32603652000.

The previous prime is 81835168999. The next prime is 81835169051. The reversal of 81835169030 is 3096153818.

It is a super-3 number, since 3×81835169030³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 16299317 + ... + 16304336.

It is an arithmetic number, because the mean of its divisors is an integer number (9243135909).

Almost surely, 2^81835169030 is an apocalyptic number.

81835169030 is a deficient number, since it is larger than the sum of its proper divisors (66055005514).

81835169030 is a wasteful number, since it uses less digits than its factorization.

81835169030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32603911.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 81835169030 in words is "eighty-one billion, eight hundred thirty-five million, one hundred sixty-nine thousand, thirty".