28173842567 has 16 divisors (see below), whose sum is σ = 30424719360. Its totient is φ = 25935027552.

The previous prime is 28173842533. The next prime is 28173842647. The reversal of 28173842567 is 76524837182.

It is a cyclic number.

It is not a de Polignac number, because 28173842567 - 2⁶ = 28173842503 is a prime.

It is a super-2 number, since 2×28173842567² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28173842527) 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, 10483898 + ... + 10486584.

It is an arithmetic number, because the mean of its divisors is an integer number (1901544960).

Almost surely, 2^28173842567 is an apocalyptic number.

28173842567 is a deficient number, since it is larger than the sum of its proper divisors (2250876793).

28173842567 is a wasteful number, since it uses less digits than its factorization.

28173842567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4622.

The product of its digits is 4515840, while the sum is 53.

The spelling of 28173842567 in words is "twenty-eight billion, one hundred seventy-three million, eight hundred forty-two thousand, five hundred sixty-seven".