28644295011 has 16 divisors (see below), whose sum is σ = 38259654048. Its totient is φ = 19062598400.

The previous prime is 28644295003. The next prime is 28644295037. The reversal of 28644295011 is 11059244682.

It is a cyclic number.

It is not a de Polignac number, because 28644295011 - 2³ = 28644295003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28644295051) 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, 5634991 + ... + 5640071.

It is an arithmetic number, because the mean of its divisors is an integer number (2391228378).

Almost surely, 2^28644295011 is an apocalyptic number.

28644295011 is a deficient number, since it is larger than the sum of its proper divisors (9615359037).

28644295011 is a wasteful number, since it uses less digits than its factorization.

28644295011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8022.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 28644295011 in words is "twenty-eight billion, six hundred forty-four million, two hundred ninety-five thousand, eleven".