81027110934 has 192 divisors, whose sum is σ = 234180011520. Its totient is φ = 19611072000.

The previous prime is 81027110921. The next prime is 81027110951. The reversal of 81027110934 is 43901172018.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1581154 + ... + 1631594.

It is an arithmetic number, because the mean of its divisors is an integer number (1219687560).

Almost surely, 2^81027110934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81027110934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117090005760).

81027110934 is an abundant number, since it is smaller than the sum of its proper divisors (153152900586).

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

81027110934 is a wasteful number, since it uses less digits than its factorization.

81027110934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50547 (or 50544 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The spelling of 81027110934 in words is "eighty-one billion, twenty-seven million, one hundred ten thousand, nine hundred thirty-four".