28845155547 has 24 divisors (see below), whose sum is σ = 44890078688. Its totient is φ = 17743017600.

The previous prime is 28845155533. The next prime is 28845155627. The reversal of 28845155547 is 74555154882.

28845155547 is a `hidden beast` number, since 2 + 8 + 8 + 45 + 1 + 55 + 547 = 666.

It is not a de Polignac number, because 28845155547 - 2⁶ = 28845155483 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28845155493 and 28845155502.

It is not an unprimeable number, because it can be changed into a prime (28845155527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217047 + ... + 323727.

Almost surely, 2^28845155547 is an apocalyptic number.

28845155547 is a deficient number, since it is larger than the sum of its proper divisors (16044923141).

28845155547 is a wasteful number, since it uses less digits than its factorization.

28845155547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109011 (or 109008 counting only the distinct ones).

The product of its digits is 8960000, while the sum is 54.

The spelling of 28845155547 in words is "twenty-eight billion, eight hundred forty-five million, one hundred fifty-five thousand, five hundred forty-seven".