28359965511 has 56 divisors (see below), whose sum is σ = 43104422400. Its totient is φ = 18648916416.

The previous prime is 28359965509. The next prime is 28359965537. The reversal of 28359965511 is 11556995382.

28359965511 is a `hidden beast` number, since 2 + 8 + 35 + 9 + 96 + 5 + 511 = 666.

It is not a de Polignac number, because 28359965511 - 2¹ = 28359965509 is a prime.

It is a super-2 number, since 2×28359965511² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28359965561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 17052666 + ... + 17054328.

Almost surely, 2^28359965511 is an apocalyptic number.

28359965511 is a deficient number, since it is larger than the sum of its proper divisors (14744456889).

28359965511 is a wasteful number, since it uses less digits than its factorization.

28359965511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987 (or 1972 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 54.

The spelling of 28359965511 in words is "twenty-eight billion, three hundred fifty-nine million, nine hundred sixty-five thousand, five hundred eleven".