42845172769 has 12 divisors (see below), whose sum is σ = 49843746900. Its totient is φ = 36721896288.

The previous prime is 42845172749. The next prime is 42845172793. The reversal of 42845172769 is 96727154824.

42845172769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 42399751744 + 445421025 = 205912^2 + 21105^2 .

It is not a de Polignac number, because 42845172769 - 2⁵ = 42845172737 is a prime.

It is a super-2 number, since 2×42845172769² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42845172749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1159227 + ... + 1195615.

It is an arithmetic number, because the mean of its divisors is an integer number (4153645575).

Almost surely, 2^42845172769 is an apocalyptic number.

42845172769 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

42845172769 is a deficient number, since it is larger than the sum of its proper divisors (6998574131).

42845172769 is a wasteful number, since it uses less digits than its factorization.

42845172769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60432 (or 60425 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 55.

The spelling of 42845172769 in words is "forty-two billion, eight hundred forty-five million, one hundred seventy-two thousand, seven hundred sixty-nine".