81134063429120 has 160 divisors (see below), whose sum is σ = 209726617449888. Its totient is φ = 29924152639488.

The previous prime is 81134063429087. The next prime is 81134063429183. The reversal of 81134063429120 is 2192436043118.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28841012 + ... + 31528908.

Almost surely, 2^{81134063429120} is an apocalyptic number.

81134063429120 is a gapful number since it is divisible by the number (80) 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 81134063429120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104863308724944).

81134063429120 is an abundant number, since it is smaller than the sum of its proper divisors (128592554020768).

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

81134063429120 is a wasteful number, since it uses less digits than its factorization.

81134063429120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688840 (or 2688824 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The spelling of 81134063429120 in words is "eighty-one trillion, one hundred thirty-four billion, sixty-three million, four hundred twenty-nine thousand, one hundred twenty".