639743342333 has 8 divisors (see below), whose sum is σ = 652613777088. Its totient is φ = 627000971904.

The previous prime is 639743342297. The next prime is 639743342339. The reversal of 639743342333 is 333243347936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 639743342333 - 2⁶ = 639743342269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (639743342339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32005991 + ... + 32025972.

It is an arithmetic number, because the mean of its divisors is an integer number (81576722136).

Almost surely, 2^639743342333 is an apocalyptic number.

It is an amenable number.

639743342333 is a deficient number, since it is larger than the sum of its proper divisors (12870434755).

639743342333 is a wasteful number, since it uses less digits than its factorization.

639743342333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64032163.

The product of its digits is 8817984, while the sum is 50.

The spelling of 639743342333 in words is "six hundred thirty-nine billion, seven hundred forty-three million, three hundred forty-two thousand, three hundred thirty-three".