2555600643 has 24 divisors (see below), whose sum is σ = 3980492880. Its totient is φ = 1574691840.

The previous prime is 2555600629. The next prime is 2555600647. The reversal of 2555600643 is 3460065552.

It is a happy number.

2555600643 is a `hidden beast` number, since 2 + 5 + 5 + 5 + 6 + 0 + 0 + 643 = 666.

It is not a de Polignac number, because 2555600643 - 2²⁵ = 2522046211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2555600598 and 2555600607.

It is not an unprimeable number, because it can be changed into a prime (2555600647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175246 + ... + 189267.

It is an arithmetic number, because the mean of its divisors is an integer number (165853870).

Almost surely, 2^2555600643 is an apocalyptic number.

2555600643 is a deficient number, since it is larger than the sum of its proper divisors (1424892237).

2555600643 is a wasteful number, since it uses less digits than its factorization.

2555600643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364579 (or 364576 counting only the distinct ones).

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

The square root of 2555600643 is about 50552.9489050837. The cubic root of 2555600643 is about 1367.1966835836.

The spelling of 2555600643 in words is "two billion, five hundred fifty-five million, six hundred thousand, six hundred forty-three".