27731855158 has 32 divisors (see below), whose sum is σ = 48082180608. Its totient is φ = 11749881600.

The previous prime is 27731855153. The next prime is 27731855167. The reversal of 27731855158 is 85155813772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27731855153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1308103 + ... + 1329133.

It is an arithmetic number, because the mean of its divisors is an integer number (1502568144).

Almost surely, 2^27731855158 is an apocalyptic number.

27731855158 is a deficient number, since it is larger than the sum of its proper divisors (20350325450).

27731855158 is a wasteful number, since it uses less digits than its factorization.

27731855158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22108.

The product of its digits is 2352000, while the sum is 52.

The spelling of 27731855158 in words is "twenty-seven billion, seven hundred thirty-one million, eight hundred fifty-five thousand, one hundred fifty-eight".