28573161803 has 4 divisors (see below), whose sum is σ = 28641031968. Its totient is φ = 28505291640.

The previous prime is 28573161781. The next prime is 28573161817. The reversal of 28573161803 is 30816137582.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28573161803 - 2¹² = 28573157707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28573166803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33934451 + ... + 33935292.

It is an arithmetic number, because the mean of its divisors is an integer number (7160257992).

Almost surely, 2^28573161803 is an apocalyptic number.

28573161803 is a deficient number, since it is larger than the sum of its proper divisors (67870165).

28573161803 is an equidigital number, since it uses as much as digits as its factorization.

28573161803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67870164.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 28573161803 in words is "twenty-eight billion, five hundred seventy-three million, one hundred sixty-one thousand, eight hundred three".