27655193961 has 16 divisors (see below), whose sum is σ = 42292293120. Its totient is φ = 17842060080.

The previous prime is 27655193953. The next prime is 27655193977. The reversal of 27655193961 is 16939155672.

27655193961 is a `hidden beast` number, since 2 + 7 + 65 + 519 + 3 + 9 + 61 = 666.

It is not a de Polignac number, because 27655193961 - 2³ = 27655193953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27655193898 and 27655193907.

It is not an unprimeable number, because it can be changed into a prime (27655193911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16519590 + ... + 16521263.

It is an arithmetic number, because the mean of its divisors is an integer number (2643268320).

Almost surely, 2^27655193961 is an apocalyptic number.

It is an amenable number.

27655193961 is a deficient number, since it is larger than the sum of its proper divisors (14637099159).

27655193961 is a wasteful number, since it uses less digits than its factorization.

27655193961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33040893 (or 33040887 counting only the distinct ones).

The product of its digits is 3061800, while the sum is 54.

The spelling of 27655193961 in words is "twenty-seven billion, six hundred fifty-five million, one hundred ninety-three thousand, nine hundred sixty-one".