28775737603 has 4 divisors (see below), whose sum is σ = 28818495688. Its totient is φ = 28732979520.

The previous prime is 28775737567. The next prime is 28775737663. The reversal of 28775737603 is 30673757782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30673757782 = 2 ⋅15336878891.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28775737603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28775737663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21378033 + ... + 21379378.

It is an arithmetic number, because the mean of its divisors is an integer number (7204623922).

Almost surely, 2^28775737603 is an apocalyptic number.

28775737603 is a deficient number, since it is larger than the sum of its proper divisors (42758085).

28775737603 is an equidigital number, since it uses as much as digits as its factorization.

28775737603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42758084.

The product of its (nonzero) digits is 10372320, while the sum is 55.

The spelling of 28775737603 in words is "twenty-eight billion, seven hundred seventy-five million, seven hundred thirty-seven thousand, six hundred three".