81732714458 has 8 divisors (see below), whose sum is σ = 122842808928. Its totient is φ = 40785111484.

The previous prime is 81732714451. The next prime is 81732714473. The reversal of 81732714458 is 85441723718.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×81732714458² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (81732714451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40621616 + ... + 40623627.

It is an arithmetic number, because the mean of its divisors is an integer number (15355351116).

Almost surely, 2^81732714458 is an apocalyptic number.

81732714458 is a deficient number, since it is larger than the sum of its proper divisors (41110094470).

81732714458 is a wasteful number, since it uses less digits than its factorization.

81732714458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81245748.

The product of its digits is 1505280, while the sum is 50.

The spelling of 81732714458 in words is "eighty-one billion, seven hundred thirty-two million, seven hundred fourteen thousand, four hundred fifty-eight".