28755148888791 has 12 divisors (see below), whose sum is σ = 44730231604968. Its totient is φ = 17695476239184.

The previous prime is 28755148888747. The next prime is 28755148888801. The reversal of 28755148888791 is 19788884155782.

28755148888791 is a `hidden beast` number, since 2 + 8 + 7 + 5 + 51 + 488 + 8 + 87 + 9 + 1 = 666.

It is not a de Polignac number, because 28755148888791 - 2¹³ = 28755148880599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28755148888791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28755148808791) 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, 122885251545 + ... + 122885251778.

It is an arithmetic number, because the mean of its divisors is an integer number (3727519300414).

Almost surely, 2^{28755148888791} is an apocalyptic number.

28755148888791 is a deficient number, since it is larger than the sum of its proper divisors (15975082716177).

28755148888791 is a wasteful number, since it uses less digits than its factorization.

28755148888791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245770503342 (or 245770503339 counting only the distinct ones).

The product of its digits is 2890137600, while the sum is 81.

The spelling of 28755148888791 in words is "twenty-eight trillion, seven hundred fifty-five billion, one hundred forty-eight million, eight hundred eighty-eight thousand, seven hundred ninety-one".