28137885488 has 10 divisors (see below), whose sum is σ = 54517153164. Its totient is φ = 14068942736.

The previous prime is 28137885469. The next prime is 28137885491. The reversal of 28137885488 is 88458873182.

It is a self number, because there is not a number n which added to its sum of digits gives 28137885488.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 879308906 + ... + 879308937.

Almost surely, 2^28137885488 is an apocalyptic number.

It is an amenable number.

28137885488 is a deficient number, since it is larger than the sum of its proper divisors (26379267676).

28137885488 is a wasteful number, since it uses less digits than its factorization.

28137885488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758617851 (or 1758617845 counting only the distinct ones).

The product of its digits is 27525120, while the sum is 62.

The spelling of 28137885488 in words is "twenty-eight billion, one hundred thirty-seven million, eight hundred eighty-five thousand, four hundred eighty-eight".