28133665154 has 8 divisors (see below), whose sum is σ = 48229140288. Its totient is φ = 12057285060.

The previous prime is 28133665141. The next prime is 28133665181. The reversal of 28133665154 is 45156633182.

It is a happy number.

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

It is a super-2 number, since 2×28133665154² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004773742 + ... + 1004773769.

It is an arithmetic number, because the mean of its divisors is an integer number (6028642536).

Almost surely, 2^28133665154 is an apocalyptic number.

28133665154 is a deficient number, since it is larger than the sum of its proper divisors (20095475134).

28133665154 is a wasteful number, since it uses less digits than its factorization.

28133665154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009547520.

The product of its digits is 518400, while the sum is 44.

The spelling of 28133665154 in words is "twenty-eight billion, one hundred thirty-three million, six hundred sixty-five thousand, one hundred fifty-four".