27663257061 has 48 divisors (see below), whose sum is σ = 46953234432. Its totient is φ = 15519319200.

The previous prime is 27663257053. The next prime is 27663257087. The reversal of 27663257061 is 16075236672.

27663257061 is a `hidden beast` number, since 2 + 7 + 6 + 632 + 5 + 7 + 0 + 6 + 1 = 666.

It is not a de Polignac number, because 27663257061 - 2³ = 27663257053 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27663256998 and 27663257016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27663257051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 125365 + ... + 266538.

It is an arithmetic number, because the mean of its divisors is an integer number (978192384).

Almost surely, 2^27663257061 is an apocalyptic number.

It is an amenable number.

27663257061 is a deficient number, since it is larger than the sum of its proper divisors (19289977371).

27663257061 is a wasteful number, since it uses less digits than its factorization.

27663257061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391974 (or 391971 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The spelling of 27663257061 in words is "twenty-seven billion, six hundred sixty-three million, two hundred fifty-seven thousand, sixty-one".