642165341344 has 24 divisors (see below), whose sum is σ = 1264297114080. Its totient is φ = 321074010816.

The previous prime is 642165341317. The next prime is 642165341371. The reversal of 642165341344 is 443143561246.

It is an interprime number because it is at equal distance from previous prime (642165341317) and next prime (642165341371).

It is a self number, because there is not a number n which added to its sum of digits gives 642165341344.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1030647 + ... + 1531849.

It is an arithmetic number, because the mean of its divisors is an integer number (52679046420).

Almost surely, 2^642165341344 is an apocalyptic number.

It is an amenable number.

642165341344 is a deficient number, since it is larger than the sum of its proper divisors (622131772736).

642165341344 is a wasteful number, since it uses less digits than its factorization.

642165341344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541252 (or 541244 counting only the distinct ones).

The product of its digits is 829440, while the sum is 43.

The spelling of 642165341344 in words is "six hundred forty-two billion, one hundred sixty-five million, three hundred forty-one thousand, three hundred forty-four".