28553016663 has 6 divisors (see below), whose sum is σ = 41243246304. Its totient is φ = 19035344436.

The previous prime is 28553016641. The next prime is 28553016691. The reversal of 28553016663 is 36661035582.

It is not a de Polignac number, because 28553016663 - 2¹⁶ = 28552951127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28553016623) 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, 1586278695 + ... + 1586278712.

It is an arithmetic number, because the mean of its divisors is an integer number (6873874384).

Almost surely, 2^28553016663 is an apocalyptic number.

28553016663 is a deficient number, since it is larger than the sum of its proper divisors (12690229641).

28553016663 is a wasteful number, since it uses less digits than its factorization.

28553016663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172557413 (or 3172557410 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 28553016663 in words is "twenty-eight billion, five hundred fifty-three million, sixteen thousand, six hundred sixty-three".