28344113637885 has 24 divisors (see below), whose sum is σ = 49289828908320. Its totient is φ = 15067620011232.

The previous prime is 28344113637823. The next prime is 28344113637901. The reversal of 28344113637885 is 58873631144382.

It is a happy number.

28344113637885 is a `hidden beast` number, since 2 + 83 + 4 + 411 + 3 + 63 + 7 + 8 + 85 = 666.

It is not a de Polignac number, because 28344113637885 - 2⁸ = 28344113637629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1025831775 + ... + 1025859404.

It is an arithmetic number, because the mean of its divisors is an integer number (2053742871180).

Almost surely, 2^{28344113637885} is an apocalyptic number.

It is an amenable number.

28344113637885 is a deficient number, since it is larger than the sum of its proper divisors (20945715270435).

28344113637885 is a wasteful number, since it uses less digits than its factorization.

28344113637885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051691497 (or 2051691494 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 63.

The spelling of 28344113637885 in words is "twenty-eight trillion, three hundred forty-four billion, one hundred thirteen million, six hundred thirty-seven thousand, eight hundred eighty-five".