28641157853 has 32 divisors (see below), whose sum is σ = 36236132352. Its totient is φ = 21989448000.

The previous prime is 28641157843. The next prime is 28641157873. The reversal of 28641157853 is 35875114682.

It is a cyclic number.

It is not a de Polignac number, because 28641157853 - 2¹⁰ = 28641156829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28641157823) 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 31 ways as a sum of consecutive naturals, for example, 2441903 + ... + 2453603.

It is an arithmetic number, because the mean of its divisors is an integer number (1132379136).

Almost surely, 2^28641157853 is an apocalyptic number.

It is an amenable number.

28641157853 is a deficient number, since it is larger than the sum of its proper divisors (7594974499).

28641157853 is a wasteful number, since it uses less digits than its factorization.

28641157853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12185.

The product of its digits is 1612800, while the sum is 50.

The spelling of 28641157853 in words is "twenty-eight billion, six hundred forty-one million, one hundred fifty-seven thousand, eight hundred fifty-three".