28825771945569 has 48 divisors (see below), whose sum is σ = 40887042520896. Its totient is φ = 18060705561600.

The previous prime is 28825771945519. The next prime is 28825771945573. The reversal of 28825771945569 is 96554917752882.

It is not a de Polignac number, because 28825771945569 - 2⁷ = 28825771945441 is a prime.

It is a super-2 number, since 2×28825771945569² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28825771945494 and 28825771945503.

It is not an unprimeable number, because it can be changed into a prime (28825771945519) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3822535939 + ... + 3822543479.

It is an arithmetic number, because the mean of its divisors is an integer number (851813385852).

Almost surely, 2^{28825771945569} is an apocalyptic number.

It is an amenable number.

28825771945569 is a deficient number, since it is larger than the sum of its proper divisors (12061270575327).

28825771945569 is a wasteful number, since it uses less digits than its factorization.

28825771945569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13346 (or 13329 counting only the distinct ones).

The product of its digits is 3048192000, while the sum is 78.

The spelling of 28825771945569 in words is "twenty-eight trillion, eight hundred twenty-five billion, seven hundred seventy-one million, nine hundred forty-five thousand, five hundred sixty-nine".