27421105323728 has 20 divisors (see below), whose sum is σ = 53325894887460. Its totient is φ = 13659584062464.

The previous prime is 27421105323727. The next prime is 27421105323737. The reversal of 27421105323728 is 82732350112472.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 914341388944 + 26506763934784 = 956212^2 + 5148472^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27421105323727) 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, 3185533025 + ... + 3185541632.

It is an arithmetic number, because the mean of its divisors is an integer number (2666294744373).

Almost surely, 2^{27421105323728} is an apocalyptic number.

It is an amenable number.

27421105323728 is a deficient number, since it is larger than the sum of its proper divisors (25904789563732).

27421105323728 is a wasteful number, since it uses less digits than its factorization.

27421105323728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6371074934 (or 6371074928 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 27421105323728 in words is "twenty-seven trillion, four hundred twenty-one billion, one hundred five million, three hundred twenty-three thousand, seven hundred twenty-eight".