28556164041 has 4 divisors (see below), whose sum is σ = 38074885392. Its totient is φ = 19037442692.

The previous prime is 28556164037. The next prime is 28556164067. The reversal of 28556164041 is 14046165582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28556164041 - 2² = 28556164037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28556163984 and 28556164002.

It is not an unprimeable number, because it can be changed into a prime (28556164141) 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, 4759360671 + ... + 4759360676.

It is an arithmetic number, because the mean of its divisors is an integer number (9518721348).

Almost surely, 2^28556164041 is an apocalyptic number.

It is an amenable number.

28556164041 is a deficient number, since it is larger than the sum of its proper divisors (9518721351).

28556164041 is an equidigital number, since it uses as much as digits as its factorization.

28556164041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9518721350.

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 28556164041 in words is "twenty-eight billion, five hundred fifty-six million, one hundred sixty-four thousand, forty-one".