81459127000 has 32 divisors (see below), whose sum is σ = 190614359520. Its totient is φ = 32583650400.

The previous prime is 81459126997. The next prime is 81459127021. The reversal of 81459127000 is 72195418.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40728564 + ... + 40730563.

It is an arithmetic number, because the mean of its divisors is an integer number (5956698735).

Almost surely, 2^81459127000 is an apocalyptic number.

It is an amenable number.

81459127000 is an abundant number, since it is smaller than the sum of its proper divisors (109155232520).

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

81459127000 is a wasteful number, since it uses less digits than its factorization.

81459127000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81459148 (or 81459134 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 81459127000 in words is "eighty-one billion, four hundred fifty-nine million, one hundred twenty-seven thousand".