1642344342271 has 12 divisors (see below), whose sum is σ = 1733704237944. Its totient is φ = 1555571883600.

The previous prime is 1642344342269. The next prime is 1642344342293. The reversal of 1642344342271 is 1722434432461.

It is not a de Polignac number, because 1642344342271 - 2¹ = 1642344342269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642344342071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1208541 + ... + 2178361.

It is an arithmetic number, because the mean of its divisors is an integer number (144475353162).

Almost surely, 2^{1642344342271} is an apocalyptic number.

1642344342271 is a deficient number, since it is larger than the sum of its proper divisors (91359895673).

1642344342271 is an equidigital number, since it uses as much as digits as its factorization.

1642344342271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974550 (or 974531 counting only the distinct ones).

The product of its digits is 774144, while the sum is 43.

The spelling of 1642344342271 in words is "one trillion, six hundred forty-two billion, three hundred forty-four million, three hundred forty-two thousand, two hundred seventy-one".