28773668605 has 32 divisors (see below), whose sum is σ = 38517534720. Its totient is φ = 20455110720.

The previous prime is 28773668549. The next prime is 28773668611. The reversal of 28773668605 is 50686637782.

It is not a de Polignac number, because 28773668605 - 2⁷ = 28773668477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28773668605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2162182 + ... + 2175448.

It is an arithmetic number, because the mean of its divisors is an integer number (1203672960).

Almost surely, 2^28773668605 is an apocalyptic number.

It is an amenable number.

28773668605 is a deficient number, since it is larger than the sum of its proper divisors (9743866115).

28773668605 is a wasteful number, since it uses less digits than its factorization.

28773668605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14169.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 28773668605 in words is "twenty-eight billion, seven hundred seventy-three million, six hundred sixty-eight thousand, six hundred five".