81714272448 has 28 divisors (see below), whose sum is σ = 216202346360. Its totient is φ = 27238090752.

The previous prime is 81714272447. The next prime is 81714272467. The reversal of 81714272448 is 84427241718.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 81714272397 and 81714272406.

It is not an unprimeable number, because it can be changed into a prime (81714272447) 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, 212797393 + ... + 212797776.

It is an arithmetic number, because the mean of its divisors is an integer number (7721512370).

Almost surely, 2^81714272448 is an apocalyptic number.

It is an amenable number.

81714272448 is an abundant number, since it is smaller than the sum of its proper divisors (134488073912).

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

81714272448 is a wasteful number, since it uses less digits than its factorization.

81714272448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425595184 (or 425595174 counting only the distinct ones).

The product of its digits is 802816, while the sum is 48.

The spelling of 81714272448 in words is "eighty-one billion, seven hundred fourteen million, two hundred seventy-two thousand, four hundred forty-eight".