27531357161 has 16 divisors (see below), whose sum is σ = 34354741248. Its totient is φ = 21434298000.

The previous prime is 27531357131. The next prime is 27531357169. The reversal of 27531357161 is 16175313572.

It is a cyclic number.

It is not a de Polignac number, because 27531357161 - 2²² = 27527162857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27531357169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66695 + ... + 243948.

It is an arithmetic number, because the mean of its divisors is an integer number (2147171328).

Almost surely, 2^27531357161 is an apocalyptic number.

It is an amenable number.

27531357161 is a deficient number, since it is larger than the sum of its proper divisors (6823384087).

27531357161 is a wasteful number, since it uses less digits than its factorization.

27531357161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311812.

The product of its digits is 132300, while the sum is 41.

The spelling of 27531357161 in words is "twenty-seven billion, five hundred thirty-one million, three hundred fifty-seven thousand, one hundred sixty-one".