27558641231 has 16 divisors (see below), whose sum is σ = 31861029888. Its totient is φ = 23558409600.

The previous prime is 27558641189. The next prime is 27558641263. The reversal of 27558641231 is 13214685572.

It is a de Polignac number, because none of the positive numbers 2^k-27558641231 is a prime.

It is a super-2 number, since 2×27558641231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27558641731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144386 + ... + 275616.

It is an arithmetic number, because the mean of its divisors is an integer number (1991314368).

Almost surely, 2^27558641231 is an apocalyptic number.

27558641231 is a deficient number, since it is larger than the sum of its proper divisors (4302388657).

27558641231 is a wasteful number, since it uses less digits than its factorization.

27558641231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132382.

The product of its digits is 403200, while the sum is 44.

The spelling of 27558641231 in words is "twenty-seven billion, five hundred fifty-eight million, six hundred forty-one thousand, two hundred thirty-one".