2644160553 has 12 divisors (see below), whose sum is σ = 3820389300. Its totient is φ = 1762290816.

The previous prime is 2644160549. The next prime is 2644160587. The reversal of 2644160553 is 3550614462.

2644160553 is a `hidden beast` number, since 2 + 6 + 4 + 41 + 60 + 553 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1652666409 + 991494144 = 40653^2 + 31488^2 .

It is not a de Polignac number, because 2644160553 - 2² = 2644160549 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2644160543) 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, 3828 + ... + 72821.

It is an arithmetic number, because the mean of its divisors is an integer number (318365775).

Almost surely, 2^2644160553 is an apocalyptic number.

It is an amenable number.

2644160553 is a deficient number, since it is larger than the sum of its proper divisors (1176228747).

2644160553 is a wasteful number, since it uses less digits than its factorization.

2644160553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80488 (or 80485 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 2644160553 is about 51421.4017020151. The cubic root of 2644160553 is about 1382.8103048829.

The spelling of 2644160553 in words is "two billion, six hundred forty-four million, one hundred sixty thousand, five hundred fifty-three".