27804845454 has 32 divisors (see below), whose sum is σ = 56368134144. Its totient is φ = 9142225920.

The previous prime is 27804845443. The next prime is 27804845477. The reversal of 27804845454 is 45454840872.

It is a super-2 number, since 2×27804845454² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27804845397 and 27804845406.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 275667 + ... + 362769.

It is an arithmetic number, because the mean of its divisors is an integer number (1761504192).

Almost surely, 2^27804845454 is an apocalyptic number.

27804845454 is an abundant number, since it is smaller than the sum of its proper divisors (28563288690).

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

27804845454 is a wasteful number, since it uses less digits than its factorization.

27804845454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87832.

The product of its (nonzero) digits is 5734400, while the sum is 51.

The spelling of 27804845454 in words is "twenty-seven billion, eight hundred four million, eight hundred forty-five thousand, four hundred fifty-four".