27840404872 has 24 divisors (see below), whose sum is σ = 60723332910. Its totient is φ = 11931601920.

The previous prime is 27840404863. The next prime is 27840404881.

27840404872 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (27840404863) and next prime (27840404881).

It can be written as a sum of positive squares in only one way, i.e., 19408390596 + 8432014276 = 139314^2 + 91826^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35510329 + ... + 35511112.

Almost surely, 2^27840404872 is an apocalyptic number.

It is an amenable number.

27840404872 is an abundant number, since it is smaller than the sum of its proper divisors (32882928038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27840404872 is a wasteful number, since it uses less digits than its factorization.

27840404872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71021461 (or 71021450 counting only the distinct ones).

The product of its (nonzero) digits is 802816, while the sum is 46.

The spelling of 27840404872 in words is "twenty-seven billion, eight hundred forty million, four hundred four thousand, eight hundred seventy-two".