28655853811 has 32 divisors (see below), whose sum is σ = 32527982592. Its totient is φ = 25060164480.

The previous prime is 28655853773. The next prime is 28655853841. The reversal of 28655853811 is 11835855682.

It is a de Polignac number, because none of the positive numbers 2^k-28655853811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28655853841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12023926 + ... + 12026308.

It is an arithmetic number, because the mean of its divisors is an integer number (1016499456).

Almost surely, 2^28655853811 is an apocalyptic number.

28655853811 is a deficient number, since it is larger than the sum of its proper divisors (3872128781).

28655853811 is a wasteful number, since it uses less digits than its factorization.

28655853811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043.

The product of its digits is 2304000, while the sum is 52.

The spelling of 28655853811 in words is "twenty-eight billion, six hundred fifty-five million, eight hundred fifty-three thousand, eight hundred eleven".