81013701532000 has 96 divisors (see below), whose sum is σ = 209527015632480. Its totient is φ = 30699928972800.

The previous prime is 81013701531989. The next prime is 81013701532063. The reversal of 81013701532000 is 23510731018.

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, 532908879 + ... + 533060878.

It is an arithmetic number, because the mean of its divisors is an integer number (2182573079505).

Almost surely, 2^{81013701532000} is an apocalyptic number.

81013701532000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

81013701532000 is an abundant number, since it is smaller than the sum of its proper divisors (128513314100480).

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

81013701532000 is a wasteful number, since it uses less digits than its factorization.

81013701532000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065969801 (or 1065969783 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 81013701532000 in words is "eighty-one trillion, thirteen billion, seven hundred one million, five hundred thirty-two thousand".