28116263013813 has 12 divisors (see below), whose sum is σ = 43736409132780. Its totient is φ = 17302315700736.

The previous prime is 28116263013803. The next prime is 28116263013827. The reversal of 28116263013813 is 31831036261182.

It is a happy number.

28116263013813 is a `hidden beast` number, since 2 + 8 + 1 + 1 + 6 + 2 + 630 + 1 + 3 + 8 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12141029422404 + 15975233591409 = 3484398^2 + 3996903^2 .

It is not a de Polignac number, because 28116263013813 - 2⁹ = 28116263013301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28116263013803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120154970028 + ... + 120154970261.

It is an arithmetic number, because the mean of its divisors is an integer number (3644700761065).

Almost surely, 2^{28116263013813} is an apocalyptic number.

It is an amenable number.

28116263013813 is a deficient number, since it is larger than the sum of its proper divisors (15620146118967).

28116263013813 is a wasteful number, since it uses less digits than its factorization.

28116263013813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240309940308 (or 240309940305 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

Adding to 28116263013813 its reverse (31831036261182), we get a palindrome (59947299274995).

The spelling of 28116263013813 in words is "twenty-eight trillion, one hundred sixteen billion, two hundred sixty-three million, thirteen thousand, eight hundred thirteen".