642286439611 has 2 divisors, whose sum is σ = 642286439612. Its totient is φ = 642286439610.

The previous prime is 642286439603. The next prime is 642286439621. The reversal of 642286439611 is 116934682246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 642286439611 - 2³ = 642286439603 is a prime.

It is not a weakly prime, because it can be changed into another prime (642286439621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 321143219805 + 321143219806.

It is an arithmetic number, because the mean of its divisors is an integer number (321143219806).

Almost surely, 2^642286439611 is an apocalyptic number.

642286439611 is a deficient number, since it is larger than the sum of its proper divisors (1).

642286439611 is an equidigital number, since it uses as much as digits as its factorization.

642286439611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2985984, while the sum is 52.

The spelling of 642286439611 in words is "six hundred forty-two billion, two hundred eighty-six million, four hundred thirty-nine thousand, six hundred eleven".