28135211361 has 16 divisors (see below), whose sum is σ = 39730451904. Its totient is φ = 17648953344.

The previous prime is 28135211339. The next prime is 28135211371. The reversal of 28135211361 is 16311253182.

It is not a de Polignac number, because 28135211361 - 2⁶ = 28135211297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28135211371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136881 + ... + 273873.

It is an arithmetic number, because the mean of its divisors is an integer number (2483153244).

Almost surely, 2^28135211361 is an apocalyptic number.

It is an amenable number.

28135211361 is a deficient number, since it is larger than the sum of its proper divisors (11595240543).

28135211361 is a wasteful number, since it uses less digits than its factorization.

28135211361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141040.

The product of its digits is 8640, while the sum is 33.

The spelling of 28135211361 in words is "twenty-eight billion, one hundred thirty-five million, two hundred eleven thousand, three hundred sixty-one".