28959099123 has 16 divisors (see below), whose sum is σ = 40956091776. Its totient is φ = 18138122880.

The previous prime is 28959099073. The next prime is 28959099133. The reversal of 28959099123 is 32199095982.

It is not a de Polignac number, because 28959099123 - 2¹² = 28959095027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28959099133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 475573 + ... + 532998.

It is an arithmetic number, because the mean of its divisors is an integer number (2559755736).

Almost surely, 2^28959099123 is an apocalyptic number.

28959099123 is a deficient number, since it is larger than the sum of its proper divisors (11996992653).

28959099123 is a wasteful number, since it uses less digits than its factorization.

28959099123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009154.

The product of its (nonzero) digits is 3149280, while the sum is 57.

The spelling of 28959099123 in words is "twenty-eight billion, nine hundred fifty-nine million, ninety-nine thousand, one hundred twenty-three".