28545804687 has 16 divisors (see below), whose sum is σ = 40069330560. Its totient is φ = 18026659872.

The previous prime is 28545804659. The next prime is 28545804713. The reversal of 28545804687 is 78640854582.

It is not a de Polignac number, because 28545804687 - 2¹⁹ = 28545280399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28545804787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504553 + ... + 558269.

It is an arithmetic number, because the mean of its divisors is an integer number (2504333160).

Almost surely, 2^28545804687 is an apocalyptic number.

28545804687 is a deficient number, since it is larger than the sum of its proper divisors (11523525873).

28545804687 is a wasteful number, since it uses less digits than its factorization.

28545804687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63062.

The product of its (nonzero) digits is 17203200, while the sum is 57.

The spelling of 28545804687 in words is "twenty-eight billion, five hundred forty-five million, eight hundred four thousand, six hundred eighty-seven".