28518165003 has 6 divisors (see below), whose sum is σ = 38024610004. Its totient is φ = 19011915004.

The previous prime is 28518165001. The next prime is 28518165019. The reversal of 28518165003 is 30056181582.

It is not a de Polignac number, because 28518165003 - 2¹ = 28518165001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28518165001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 243748 + ... + 341246.

Almost surely, 2^28518165003 is an apocalyptic number.

28518165003 is a deficient number, since it is larger than the sum of its proper divisors (9506445001).

28518165003 is an frugal number, since it uses more digits than its factorization.

28518165003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195001 (or 97502 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The spelling of 28518165003 in words is "twenty-eight billion, five hundred eighteen million, one hundred sixty-five thousand, three".