28259535121 has 8 divisors (see below), whose sum is σ = 28425729024. Its totient is φ = 28093823280.

The previous prime is 28259535079. The next prime is 28259535173. The reversal of 28259535121 is 12153595282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28259535121 - 2⁹ = 28259534609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28259536121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2590 + ... + 237751.

It is an arithmetic number, because the mean of its divisors is an integer number (3553216128).

Almost surely, 2^28259535121 is an apocalyptic number.

It is an amenable number.

28259535121 is a deficient number, since it is larger than the sum of its proper divisors (166193903).

28259535121 is a wasteful number, since it uses less digits than its factorization.

28259535121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241031.

The product of its digits is 216000, while the sum is 43.

The spelling of 28259535121 in words is "twenty-eight billion, two hundred fifty-nine million, five hundred thirty-five thousand, one hundred twenty-one".