6424640143 has 2 divisors, whose sum is σ = 6424640144. Its totient is φ = 6424640142.

The previous prime is 6424640093. The next prime is 6424640171. The reversal of 6424640143 is 3410464246.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6424640143 - 2¹³ = 6424631951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6424640099 and 6424640108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6424640843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3212320071 + 3212320072.

It is an arithmetic number, because the mean of its divisors is an integer number (3212320072).

Almost surely, 2^6424640143 is an apocalyptic number.

6424640143 is a deficient number, since it is larger than the sum of its proper divisors (1).

6424640143 is an equidigital number, since it uses as much as digits as its factorization.

6424640143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 6424640143 is about 80153.8529516829. The cubic root of 6424640143 is about 1859.0151782536.

The spelling of 6424640143 in words is "six billion, four hundred twenty-four million, six hundred forty thousand, one hundred forty-three".