8551643413 has 2 divisors, whose sum is σ = 8551643414. Its totient is φ = 8551643412.

The previous prime is 8551643411. The next prime is 8551643417. The reversal of 8551643413 is 3143461558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7952715684 + 598927729 = 89178^2 + 24473^2 .

It is a cyclic number.

It is not a de Polignac number, because 8551643413 - 2¹ = 8551643411 is a prime.

Together with 8551643411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8551643411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4275821706 + 4275821707.

It is an arithmetic number, because the mean of its divisors is an integer number (4275821707).

Almost surely, 2^8551643413 is an apocalyptic number.

It is an amenable number.

8551643413 is a deficient number, since it is larger than the sum of its proper divisors (1).

8551643413 is an equidigital number, since it uses as much as digits as its factorization.

8551643413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172800, while the sum is 40.

The square root of 8551643413 is about 92475.0961772952. The cubic root of 8551643413 is about 2044.9523575361.

The spelling of 8551643413 in words is "eight billion, five hundred fifty-one million, six hundred forty-three thousand, four hundred thirteen".