27813655449 has 32 divisors (see below), whose sum is σ = 41551171200. Its totient is φ = 18387362880.

The previous prime is 27813655433. The next prime is 27813655453. The reversal of 27813655449 is 94455631872.

It is a happy number.

27813655449 is a `hidden beast` number, since 2 + 7 + 81 + 3 + 6 + 554 + 4 + 9 = 666.

It is not a de Polignac number, because 27813655449 - 2⁴ = 27813655433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27813655395 and 27813655404.

It is not an unprimeable number, because it can be changed into a prime (27813655469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2022007 + ... + 2035715.

It is an arithmetic number, because the mean of its divisors is an integer number (1298474100).

Almost surely, 2^27813655449 is an apocalyptic number.

It is an amenable number.

27813655449 is a deficient number, since it is larger than the sum of its proper divisors (13737515751).

27813655449 is a wasteful number, since it uses less digits than its factorization.

27813655449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14342 (or 14336 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 27813655449 in words is "twenty-seven billion, eight hundred thirteen million, six hundred fifty-five thousand, four hundred forty-nine".