28563457012 has 6 divisors (see below), whose sum is σ = 49986049778. Its totient is φ = 14281728504.

The previous prime is 28563457007. The next prime is 28563457031. The reversal of 28563457012 is 21075436582.

It can be written as a sum of positive squares in only one way, i.e., 28262989456 + 300467556 = 168116^2 + 17334^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28563457012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3570432123 + ... + 3570432130.

Almost surely, 2^28563457012 is an apocalyptic number.

It is an amenable number.

28563457012 is a deficient number, since it is larger than the sum of its proper divisors (21422592766).

28563457012 is a wasteful number, since it uses less digits than its factorization.

28563457012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140864257 (or 7140864255 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 28563457012 in words is "twenty-eight billion, five hundred sixty-three million, four hundred fifty-seven thousand, twelve".