27775412667 has 6 divisors (see below), whose sum is σ = 40120040532. Its totient is φ = 18516941772.

The previous prime is 27775412663. The next prime is 27775412677. The reversal of 27775412667 is 76621457772.

27775412667 is a `hidden beast` number, since 2 + 7 + 77 + 541 + 26 + 6 + 7 = 666.

It is not a de Polignac number, because 27775412667 - 2² = 27775412663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27775412663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1543078473 + ... + 1543078490.

It is an arithmetic number, because the mean of its divisors is an integer number (6686673422).

Almost surely, 2^27775412667 is an apocalyptic number.

27775412667 is a deficient number, since it is larger than the sum of its proper divisors (12344627865).

27775412667 is a wasteful number, since it uses less digits than its factorization.

27775412667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3086156969 (or 3086156966 counting only the distinct ones).

The product of its digits is 6914880, while the sum is 54.

The spelling of 27775412667 in words is "twenty-seven billion, seven hundred seventy-five million, four hundred twelve thousand, six hundred sixty-seven".