27905432269 has 24 divisors (see below), whose sum is σ = 33062694912. Its totient is φ = 23347134720.

The previous prime is 27905432267. The next prime is 27905432327. The reversal of 27905432269 is 96223450972.

It is not a de Polignac number, because 27905432269 - 2¹ = 27905432267 is a prime.

It is a super-2 number, since 2×27905432269² (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 (27905432267) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 604212 + ... + 648754.

It is an arithmetic number, because the mean of its divisors is an integer number (1377612288).

Almost surely, 2^27905432269 is an apocalyptic number.

It is an amenable number.

27905432269 is a deficient number, since it is larger than the sum of its proper divisors (5157262643).

27905432269 is a wasteful number, since it uses less digits than its factorization.

27905432269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44917 (or 44904 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 49.

The spelling of 27905432269 in words is "twenty-seven billion, nine hundred five million, four hundred thirty-two thousand, two hundred sixty-nine".