27958636269 has 40 divisors (see below), whose sum is σ = 42784283520. Its totient is φ = 18189002304.

The previous prime is 27958636253. The next prime is 27958636291. The reversal of 27958636269 is 96263685972.

27958636269 is a `hidden beast` number, since 27 + 9 + 586 + 3 + 6 + 26 + 9 = 666.

It is not a de Polignac number, because 27958636269 - 2⁴ = 27958636253 is a prime.

It is a super-2 number, since 2×27958636269² (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 (27958636219) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 633372 + ... + 676074.

It is an arithmetic number, because the mean of its divisors is an integer number (1069607088).

Almost surely, 2^27958636269 is an apocalyptic number.

It is an amenable number.

27958636269 is a deficient number, since it is larger than the sum of its proper divisors (14825647251).

27958636269 is a wasteful number, since it uses less digits than its factorization.

27958636269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42911 (or 42902 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 63.

The spelling of 27958636269 in words is "twenty-seven billion, nine hundred fifty-eight million, six hundred thirty-six thousand, two hundred sixty-nine".