81110467227954 has 32 divisors (see below), whose sum is σ = 170759905505280. Its totient is φ = 25613677686672.

The previous prime is 81110467227943. The next prime is 81110467228019. The reversal of 81110467227954 is 45972276401118.

It is a super-2 number, since 2×81110467227954² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 81110467227894 and 81110467227903.

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 15 ways as a sum of consecutive naturals, for example, 17698759 + ... + 21805205.

It is an arithmetic number, because the mean of its divisors is an integer number (5336247047040).

Almost surely, 2^{81110467227954} is an apocalyptic number.

81110467227954 is an abundant number, since it is smaller than the sum of its proper divisors (89649438277326).

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

81110467227954 is a wasteful number, since it uses less digits than its factorization.

81110467227954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4279734.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 81110467227954 in words is "eighty-one trillion, one hundred ten billion, four hundred sixty-seven million, two hundred twenty-seven thousand, nine hundred fifty-four".