27312523728 has 40 divisors (see below), whose sum is σ = 80636975808. Its totient is φ = 7803578112.

The previous prime is 27312523723. The next prime is 27312523747. The reversal of 27312523728 is 82732521372.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 27312523728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27312523723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40643301 + ... + 40643972.

Almost surely, 2^27312523728 is an apocalyptic number.

27312523728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27312523728 is an abundant number, since it is smaller than the sum of its proper divisors (53324452080).

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

27312523728 is a wasteful number, since it uses less digits than its factorization.

27312523728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81287291 (or 81287285 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The spelling of 27312523728 in words is "twenty-seven billion, three hundred twelve million, five hundred twenty-three thousand, seven hundred twenty-eight".