28445524511648 has 48 divisors (see below), whose sum is σ = 59367897638280. Its totient is φ = 13369981648896.

The previous prime is 28445524511639. The next prime is 28445524511659. The reversal of 28445524511648 is 84611542554482.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 28008777998224 + 436746513424 = 5292332^2 + 660868^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31086761 + ... + 31988712.

Almost surely, 2^{28445524511648} is an apocalyptic number.

It is an amenable number.

28445524511648 is an abundant number, since it is smaller than the sum of its proper divisors (30922373126632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28445524511648 is a wasteful number, since it uses less digits than its factorization.

28445524511648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63076329 (or 63076321 counting only the distinct ones).

The product of its digits is 49152000, while the sum is 59.

The spelling of 28445524511648 in words is "twenty-eight trillion, four hundred forty-five billion, five hundred twenty-four million, five hundred eleven thousand, six hundred forty-eight".