28271134104813 has 80 divisors (see below), whose sum is σ = 43034269045680. Its totient is φ = 18491097830400.

The previous prime is 28271134104797. The next prime is 28271134104833. The reversal of 28271134104813 is 31840143117282.

It is a happy number.

28271134104813 is a `hidden beast` number, since 2 + 8 + 27 + 1 + 134 + 10 + 481 + 3 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 14918234182569 + 13352899922244 = 3862413^2 + 3654162^2 .

It is not a de Polignac number, because 28271134104813 - 2⁴ = 28271134104797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28271134104833) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6149907231 + ... + 6149911827.

It is an arithmetic number, because the mean of its divisors is an integer number (537928363071).

Almost surely, 2^{28271134104813} is an apocalyptic number.

It is an amenable number.

28271134104813 is a deficient number, since it is larger than the sum of its proper divisors (14763134940867).

28271134104813 is a wasteful number, since it uses less digits than its factorization.

28271134104813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7580 (or 7571 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 28271134104813 in words is "twenty-eight trillion, two hundred seventy-one billion, one hundred thirty-four million, one hundred four thousand, eight hundred thirteen".