28641550185 has 40 divisors (see below), whose sum is σ = 51359749056. Its totient is φ = 15270400800.

The previous prime is 28641550151. The next prime is 28641550199. The reversal of 28641550185 is 58105514682.

28641550185 is a `hidden beast` number, since 2 + 8 + 6 + 415 + 50 + 185 = 666.

It is not a de Polignac number, because 28641550185 - 2⁶ = 28641550121 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 28641550185.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1418410 + ... + 1438460.

Almost surely, 2^28641550185 is an apocalyptic number.

It is an amenable number.

28641550185 is a deficient number, since it is larger than the sum of its proper divisors (22718198871).

28641550185 is a wasteful number, since it uses less digits than its factorization.

28641550185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23595 (or 23586 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The spelling of 28641550185 in words is "twenty-eight billion, six hundred forty-one million, five hundred fifty thousand, one hundred eighty-five".