2805169242645 has 640 divisors, whose sum is σ = 7047837941760. Its totient is φ = 1031625745920.

The previous prime is 2805169242587. The next prime is 2805169242649. The reversal of 2805169242645 is 5462429615082.

2805169242645 is a `hidden beast` number, since 2 + 80 + 5 + 16 + 92 + 426 + 45 = 666.

It is not a de Polignac number, because 2805169242645 - 2⁶ = 2805169242581 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2805169242591 and 2805169242600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2805169242649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 639 ways as a sum of consecutive naturals, for example, 585994942 + ... + 585999728.

It is an arithmetic number, because the mean of its divisors is an integer number (11012246784).

Almost surely, 2^{2805169242645} is an apocalyptic number.

It is an amenable number.

2805169242645 is an abundant number, since it is smaller than the sum of its proper divisors (4242668699115).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2805169242645 is a wasteful number, since it uses less digits than its factorization.

2805169242645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4907 (or 4898 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 2805169242645 in words is "two trillion, eight hundred five billion, one hundred sixty-nine million, two hundred forty-two thousand, six hundred forty-five".