28112853771 has 24 divisors (see below), whose sum is σ = 41784050880. Its totient is φ = 18203731056.

The previous prime is 28112853761. The next prime is 28112853827. The reversal of 28112853771 is 17735821182.

28112853771 is a `hidden beast` number, since 28 + 1 + 1 + 28 + 537 + 71 = 666.

It is not a de Polignac number, because 28112853771 - 2⁹ = 28112853259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28112853751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133641 + ... + 272186.

It is an arithmetic number, because the mean of its divisors is an integer number (1741002120).

Almost surely, 2^28112853771 is an apocalyptic number.

28112853771 is a deficient number, since it is larger than the sum of its proper divisors (13671197109).

28112853771 is a wasteful number, since it uses less digits than its factorization.

28112853771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406055 (or 406052 counting only the distinct ones).

The product of its digits is 188160, while the sum is 45.

It can be divided in two parts, 2811 and 2853771, that added together give a palindrome (2856582).

The spelling of 28112853771 in words is "twenty-eight billion, one hundred twelve million, eight hundred fifty-three thousand, seven hundred seventy-one".