2643056505 has 24 divisors (see below), whose sum is σ = 4614267840. Its totient is φ = 1399485600.

The previous prime is 2643056489. The next prime is 2643056551. The reversal of 2643056505 is 5056503462.

It is a happy number.

2643056505 is a `hidden beast` number, since 2 + 64 + 30 + 565 + 0 + 5 = 666.

It is not a de Polignac number, because 2643056505 - 2⁴ = 2643056489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2643056505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 205021 + ... + 217530.

It is an arithmetic number, because the mean of its divisors is an integer number (192261160).

Almost surely, 2^2643056505 is an apocalyptic number.

It is an amenable number.

2643056505 is a deficient number, since it is larger than the sum of its proper divisors (1971211335).

2643056505 is a wasteful number, since it uses less digits than its factorization.

2643056505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422701 (or 422698 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 2643056505 is about 51410.6652845497. The cubic root of 2643056505 is about 1382.6178176447.

Adding to 2643056505 its reverse (5056503462), we get a palindrome (7699559967).

The spelling of 2643056505 in words is "two billion, six hundred forty-three million, fifty-six thousand, five hundred five".