27087421669 has 12 divisors (see below), whose sum is σ = 34027175392. Its totient is φ = 21107081160.

The previous prime is 27087421639. The next prime is 27087421681. The reversal of 27087421669 is 96612478072.

It is not a de Polignac number, because 27087421669 - 2⁵ = 27087421637 is a prime.

It is a super-2 number, since 2×27087421669² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27087421639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15989367 + ... + 15991060.

Almost surely, 2^27087421669 is an apocalyptic number.

It is an amenable number.

27087421669 is a deficient number, since it is larger than the sum of its proper divisors (6939753723).

27087421669 is a wasteful number, since it uses less digits than its factorization.

27087421669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31980456 (or 31980445 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 27087421669 in words is "twenty-seven billion, eighty-seven million, four hundred twenty-one thousand, six hundred sixty-nine".