6642626141 has 2 divisors, whose sum is σ = 6642626142. Its totient is φ = 6642626140.

The previous prime is 6642626101. The next prime is 6642626143. The reversal of 6642626141 is 1416262466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5708406916 + 934219225 = 75554^2 + 30565^2 .

It is a cyclic number.

It is not a de Polignac number, because 6642626141 - 2¹⁰ = 6642625117 is a prime.

Together with 6642626143, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6642626095 and 6642626104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6642626143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3321313070 + 3321313071.

It is an arithmetic number, because the mean of its divisors is an integer number (3321313071).

Almost surely, 2^6642626141 is an apocalyptic number.

It is an amenable number.

6642626141 is a deficient number, since it is larger than the sum of its proper divisors (1).

6642626141 is an equidigital number, since it uses as much as digits as its factorization.

6642626141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 38.

The square root of 6642626141 is about 81502.3075808287. The cubic root of 6642626141 is about 1879.8070328763.

The spelling of 6642626141 in words is "six billion, six hundred forty-two million, six hundred twenty-six thousand, one hundred forty-one".