28968189553 has 8 divisors (see below), whose sum is σ = 29129181120. Its totient is φ = 28807593360.

The previous prime is 28968189493. The next prime is 28968189589. The reversal of 28968189553 is 35598186982.

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 28968189553 - 2³³ = 20378254961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28968189253) 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, 48708 + ... + 245578.

It is an arithmetic number, because the mean of its divisors is an integer number (3641147640).

Almost surely, 2^28968189553 is an apocalyptic number.

It is an amenable number.

28968189553 is a deficient number, since it is larger than the sum of its proper divisors (160991567).

28968189553 is a wasteful number, since it uses less digits than its factorization.

28968189553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197687.

The product of its digits is 37324800, while the sum is 64.

The spelling of 28968189553 in words is "twenty-eight billion, nine hundred sixty-eight million, one hundred eighty-nine thousand, five hundred fifty-three".