27825889881 has 16 divisors (see below), whose sum is σ = 39232101888. Its totient is φ = 17514326400.

The previous prime is 27825889853. The next prime is 27825889891. The reversal of 27825889881 is 18898852872.

It is not a de Polignac number, because 27825889881 - 2³¹ = 25678406233 is a prime.

It is a super-2 number, since 2×27825889881² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27825889801) 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, 3645006 + ... + 3652631.

It is an arithmetic number, because the mean of its divisors is an integer number (2452006368).

Almost surely, 2^27825889881 is an apocalyptic number.

It is an amenable number.

27825889881 is a deficient number, since it is larger than the sum of its proper divisors (11406212007).

27825889881 is a wasteful number, since it uses less digits than its factorization.

27825889881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7297712.

The product of its digits is 41287680, while the sum is 66.

The spelling of 27825889881 in words is "twenty-seven billion, eight hundred twenty-five million, eight hundred eighty-nine thousand, eight hundred eighty-one".