28732042100811 has 12 divisors (see below), whose sum is σ = 44563983666792. Its totient is φ = 16418309771808.

The previous prime is 28732042100807. The next prime is 28732042100821. The reversal of 28732042100811 is 11800124023782.

It is not a de Polignac number, because 28732042100811 - 2² = 28732042100807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28732042100811.

It is not an unprimeable number, because it can be changed into a prime (28732042100821) 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 11 ways as a sum of consecutive naturals, for example, 97728034210 + ... + 97728034503.

It is an arithmetic number, because the mean of its divisors is an integer number (3713665305566).

Almost surely, 2^{28732042100811} is an apocalyptic number.

28732042100811 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28732042100811 is a deficient number, since it is larger than the sum of its proper divisors (15831941565981).

28732042100811 is a wasteful number, since it uses less digits than its factorization.

28732042100811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195456068730 (or 195456068723 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 39.

The spelling of 28732042100811 in words is "twenty-eight trillion, seven hundred thirty-two billion, forty-two million, one hundred thousand, eight hundred eleven".