81546230796 has 72 divisors (see below), whose sum is σ = 205486674624. Its totient is φ = 25152513120.

The previous prime is 81546230699. The next prime is 81546230803. The reversal of 81546230796 is 69703264518.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32610 + ... + 405161.

It is an arithmetic number, because the mean of its divisors is an integer number (2853981592).

It is a 1-persistent number, because it is pandigital, but 2⋅81546230796 = 163092461592 is not.

Almost surely, 2^81546230796 is an apocalyptic number.

81546230796 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81546230796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102743337312).

81546230796 is an abundant number, since it is smaller than the sum of its proper divisors (123940443828).

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

81546230796 is a wasteful number, since it uses less digits than its factorization.

81546230796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437859 (or 437838 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 81546230796 in words is "eighty-one billion, five hundred forty-six million, two hundred thirty thousand, seven hundred ninety-six".