28908827252091 has 16 divisors (see below), whose sum is σ = 45347180004000. Its totient is φ = 18138872001024.

The previous prime is 28908827252021. The next prime is 28908827252101. The reversal of 28908827252091 is 19025272880982.

28908827252091 is a `hidden beast` number, since 2 + 8 + 9 + 0 + 88 + 27 + 2 + 520 + 9 + 1 = 666.

It is not a de Polignac number, because 28908827252091 - 2¹⁴ = 28908827235707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28908827252021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31491096766 + ... + 31491097683.

It is an arithmetic number, because the mean of its divisors is an integer number (2834198750250).

Almost surely, 2^{28908827252091} is an apocalyptic number.

28908827252091 is a deficient number, since it is larger than the sum of its proper divisors (16438352751909).

28908827252091 is a wasteful number, since it uses less digits than its factorization.

28908827252091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62982194475 (or 62982194469 counting only the distinct ones).

The product of its (nonzero) digits is 23224320, while the sum is 63.

The spelling of 28908827252091 in words is "twenty-eight trillion, nine hundred eight billion, eight hundred twenty-seven million, two hundred fifty-two thousand, ninety-one".