28753456166 has 4 divisors (see below), whose sum is σ = 43130184252. Its totient is φ = 14376728082.

The previous prime is 28753456163. The next prime is 28753456201. The reversal of 28753456166 is 66165435782.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66165435782 = 2 ⋅33082717891.

It is a super-2 number, since 2×28753456166² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28753456163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7188364040 + ... + 7188364043.

It is an arithmetic number, because the mean of its divisors is an integer number (10782546063).

Almost surely, 2^28753456166 is an apocalyptic number.

28753456166 is a deficient number, since it is larger than the sum of its proper divisors (14376728086).

28753456166 is a wasteful number, since it uses less digits than its factorization.

28753456166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14376728085.

The product of its digits is 7257600, while the sum is 53.

The spelling of 28753456166 in words is "twenty-eight billion, seven hundred fifty-three million, four hundred fifty-six thousand, one hundred sixty-six".