28451044865548 has 96 divisors (see below), whose sum is σ = 55324145874816. Its totient is φ = 12733591191552.

The previous prime is 28451044865491. The next prime is 28451044865561. The reversal of 28451044865548 is 84556844015482.

It is a self number, because there is not a number n which added to its sum of digits gives 28451044865548.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 601567390 + ... + 601614682.

It is an arithmetic number, because the mean of its divisors is an integer number (576293186196).

Almost surely, 2^{28451044865548} is an apocalyptic number.

It is an amenable number.

28451044865548 is a deficient number, since it is larger than the sum of its proper divisors (26873101009268).

28451044865548 is a wasteful number, since it uses less digits than its factorization.

28451044865548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49523 (or 49521 counting only the distinct ones).

The product of its (nonzero) digits is 196608000, while the sum is 64.

The spelling of 28451044865548 in words is "twenty-eight trillion, four hundred fifty-one billion, forty-four million, eight hundred sixty-five thousand, five hundred forty-eight".