28065181488 has 40 divisors (see below), whose sum is σ = 72557522688. Its totient is φ = 9347860032.

The previous prime is 28065181457. The next prime is 28065181499. The reversal of 28065181488 is 88418156082.

It is a self number, because there is not a number n which added to its sum of digits gives 28065181488.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161820 + ... + 286907.

Almost surely, 2^28065181488 is an apocalyptic number.

It is an amenable number.

28065181488 is an abundant number, since it is smaller than the sum of its proper divisors (44492341200).

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

28065181488 is a wasteful number, since it uses less digits than its factorization.

28065181488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450041 (or 450035 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 51.

The spelling of 28065181488 in words is "twenty-eight billion, sixty-five million, one hundred eighty-one thousand, four hundred eighty-eight".