2012643553 has 2 divisors, whose sum is σ = 2012643554. Its totient is φ = 2012643552.

The previous prime is 2012643551. The next prime is 2012643557. The reversal of 2012643553 is 3553462102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1997017344 + 15626209 = 44688^2 + 3953^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012643553 - 2¹ = 2012643551 is a prime.

Together with 2012643551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2012643551) 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 as a sum of consecutive naturals, namely, 1006321776 + 1006321777.

It is an arithmetic number, because the mean of its divisors is an integer number (1006321777).

Almost surely, 2^2012643553 is an apocalyptic number.

It is an amenable number.

2012643553 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012643553 is an equidigital number, since it uses as much as digits as its factorization.

2012643553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 2012643553 is about 44862.4960629700. The cubic root of 2012643553 is about 1262.5704544938.

The spelling of 2012643553 in words is "two billion, twelve million, six hundred forty-three thousand, five hundred fifty-three".