28139759989 has 16 divisors (see below), whose sum is σ = 31436729280. Its totient is φ = 24966869760.

The previous prime is 28139759957. The next prime is 28139760007. The reversal of 28139759989 is 98995793182.

It is a cyclic number.

It is not a de Polignac number, because 28139759989 - 2⁵ = 28139759957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28139753989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 590547 + ... + 636415.

It is an arithmetic number, because the mean of its divisors is an integer number (1964795580).

Almost surely, 2^28139759989 is an apocalyptic number.

It is an amenable number.

28139759989 is a deficient number, since it is larger than the sum of its proper divisors (3296969291).

28139759989 is a wasteful number, since it uses less digits than its factorization.

28139759989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47220.

The product of its digits is 88179840, while the sum is 70.

The spelling of 28139759989 in words is "twenty-eight billion, one hundred thirty-nine million, seven hundred fifty-nine thousand, nine hundred eighty-nine".