27804654440 has 32 divisors (see below), whose sum is σ = 62645887080. Its totient is φ = 11106676992.

The previous prime is 27804654433. The next prime is 27804654443. The reversal of 27804654440 is 4445640872.

It can be written as a sum of positive squares in 4 ways, for example, as 26992518436 + 812136004 = 164294^2 + 28498^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27804654391 and 27804654400.

It is not an unprimeable number, because it can be changed into a prime (27804654443) 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, 444839 + ... + 503478.

Almost surely, 2^27804654440 is an apocalyptic number.

27804654440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27804654440 is an abundant number, since it is smaller than the sum of its proper divisors (34841232640).

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

27804654440 is a wasteful number, since it uses less digits than its factorization.

27804654440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949061 (or 949057 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 44.

The spelling of 27804654440 in words is "twenty-seven billion, eight hundred four million, six hundred fifty-four thousand, four hundred forty".