6642626143 has 2 divisors, whose sum is σ = 6642626144. Its totient is φ = 6642626142.

The previous prime is 6642626141. The next prime is 6642626227. The reversal of 6642626143 is 3416262466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6642626143 - 2¹ = 6642626141 is a prime.

Together with 6642626141, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 6642626096 and 6642626105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6642626141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3321313071 + 3321313072.

It is an arithmetic number, because the mean of its divisors is an integer number (3321313072).

Almost surely, 2^6642626143 is an apocalyptic number.

6642626143 is a deficient number, since it is larger than the sum of its proper divisors (1).

6642626143 is an equidigital number, since it uses as much as digits as its factorization.

6642626143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 40.

The square root of 6642626143 is about 81502.3075930982. The cubic root of 6642626143 is about 1879.8070330650.

The spelling of 6642626143 in words is "six billion, six hundred forty-two million, six hundred twenty-six thousand, one hundred forty-three".