828569042449 has 4 divisors (see below), whose sum is σ = 872177939440. Its totient is φ = 784960145460.

The previous prime is 828569042447. The next prime is 828569042467. The reversal of 828569042449 is 944240965828.

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 828569042449 - 2¹ = 828569042447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (828569042443) 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, 21804448467 + ... + 21804448504.

It is an arithmetic number, because the mean of its divisors is an integer number (218044484860).

Almost surely, 2^828569042449 is an apocalyptic number.

It is an amenable number.

828569042449 is a deficient number, since it is larger than the sum of its proper divisors (43608896991).

828569042449 is a wasteful number, since it uses less digits than its factorization.

828569042449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43608896990.

The product of its (nonzero) digits is 39813120, while the sum is 61.

The spelling of 828569042449 in words is "eight hundred twenty-eight billion, five hundred sixty-nine million, forty-two thousand, four hundred forty-nine".