227161542531538 has 16 divisors (see below), whose sum is σ = 341086617584856. Its totient is φ = 113466038152320.

The previous prime is 227161542531529. The next prime is 227161542531563. The reversal of 227161542531538 is 835135245161722.

It can be written as a sum of positive squares in 4 ways, for example, as 166703810972689 + 60457731558849 = 12911383^2 + 7775457^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4353670 + ... + 21754942.

Almost surely, 2^{227161542531538} is an apocalyptic number.

227161542531538 is a deficient number, since it is larger than the sum of its proper divisors (113925075053318).

227161542531538 is a wasteful number, since it uses less digits than its factorization.

227161542531538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17407869.

The product of its digits is 12096000, while the sum is 55.

The spelling of 227161542531538 in words is "two hundred twenty-seven trillion, one hundred sixty-one billion, five hundred forty-two million, five hundred thirty-one thousand, five hundred thirty-eight".