2012643551 has 2 divisors, whose sum is σ = 2012643552. Its totient is φ = 2012643550.

The previous prime is 2012643499. The next prime is 2012643553. The reversal of 2012643551 is 1553462102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2012643551 - 2¹⁸ = 2012381407 is a prime.

Together with 2012643553, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012643553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006321775 + 1006321776.

It is an arithmetic number, because the mean of its divisors is an integer number (1006321776).

Almost surely, 2^2012643551 is an apocalyptic number.

2012643551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012643551 is an equidigital number, since it uses as much as digits as its factorization.

2012643551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 2012643551 is about 44862.4960406797. The cubic root of 2012643551 is about 1262.5704540756.

The spelling of 2012643551 in words is "two billion, twelve million, six hundred forty-three thousand, five hundred fifty-one".