81734132488 has 32 divisors (see below), whose sum is σ = 155260224000. Its totient is φ = 40331865600.

The previous prime is 81734132483. The next prime is 81734132503. The reversal of 81734132488 is 88423143718.

It is not an unprimeable number, because it can be changed into a prime (81734132483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1458328 + ... + 1513336.

It is an arithmetic number, because the mean of its divisors is an integer number (4851882000).

Almost surely, 2^81734132488 is an apocalyptic number.

It is an amenable number.

81734132488 is a deficient number, since it is larger than the sum of its proper divisors (73526091512).

81734132488 is a wasteful number, since it uses less digits than its factorization.

81734132488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57445 (or 57441 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 49.

The spelling of 81734132488 in words is "eighty-one billion, seven hundred thirty-four million, one hundred thirty-two thousand, four hundred eighty-eight".