28432650663 has 6 divisors (see below), whose sum is σ = 41069384304. Its totient is φ = 18955100436.

The previous prime is 28432650613. The next prime is 28432650667. The reversal of 28432650663 is 36605623482.

It is a happy number.

28432650663 is a `hidden beast` number, since 2 + 84 + 3 + 2 + 6 + 506 + 63 = 666.

It is not a de Polignac number, because 28432650663 - 2⁶ = 28432650599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28432650667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1579591695 + ... + 1579591712.

It is an arithmetic number, because the mean of its divisors is an integer number (6844897384).

Almost surely, 2^28432650663 is an apocalyptic number.

28432650663 is a deficient number, since it is larger than the sum of its proper divisors (12636733641).

28432650663 is a wasteful number, since it uses less digits than its factorization.

28432650663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3159183413 (or 3159183410 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 28432650663 in words is "twenty-eight billion, four hundred thirty-two million, six hundred fifty thousand, six hundred sixty-three".