28552628911 has 8 divisors (see below), whose sum is σ = 28771941744. Its totient is φ = 28333992960.

The previous prime is 28552628873. The next prime is 28552628939. The reversal of 28552628911 is 11982625582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28552628911 - 2²¹ = 28550531759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28552628311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84370 + ... + 253423.

It is an arithmetic number, because the mean of its divisors is an integer number (3596492718).

Almost surely, 2^28552628911 is an apocalyptic number.

28552628911 is a deficient number, since it is larger than the sum of its proper divisors (219312833).

28552628911 is a wasteful number, since it uses less digits than its factorization.

28552628911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338441.

The product of its digits is 691200, while the sum is 49.

The spelling of 28552628911 in words is "twenty-eight billion, five hundred fifty-two million, six hundred twenty-eight thousand, nine hundred eleven".