27841925881 has 45 divisors (see below), whose sum is σ = 35807840895. Its totient is φ = 21584880240.

The previous prime is 27841925879. The next prime is 27841925893. The reversal of 27841925881 is 18852914872.

The square root of 27841925881 is 166859.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 27279477225 + 562448656 = 165165^2 + 23716^2 .

It is not a de Polignac number, because 27841925881 - 2¹ = 27841925879 is a prime.

It is a super-2 number, since 2×27841925881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27841925851) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 141329475 + ... + 141329671.

Almost surely, 2^27841925881 is an apocalyptic number.

27841925881 is the 166859-th square number.

27841925881 is the 83430-th centered octagonal number.

It is an amenable number.

27841925881 is a deficient number, since it is larger than the sum of its proper divisors (7965915014).

27841925881 is an frugal number, since it uses more digits than its factorization.

27841925881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 215 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 55.

The spelling of 27841925881 in words is "twenty-seven billion, eight hundred forty-one million, nine hundred twenty-five thousand, eight hundred eighty-one".