339836143978842 has 256 divisors, whose sum is σ = 821406699749376. Its totient is φ = 91694363904000.

The previous prime is 339836143978817. The next prime is 339836143978963. The reversal of 339836143978842 is 248879341638933.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 20357994648 + ... + 20358011340.

It is an arithmetic number, because the mean of its divisors is an integer number (3208619920896).

Almost surely, 2^{339836143978842} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 339836143978842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (410703349874688).

339836143978842 is an abundant number, since it is smaller than the sum of its proper divisors (481570555770534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

339836143978842 is a wasteful number, since it uses less digits than its factorization.

339836143978842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18805.

The product of its digits is 4514807808, while the sum is 78.

The spelling of 339836143978842 in words is "three hundred thirty-nine trillion, eight hundred thirty-six billion, one hundred forty-three million, nine hundred seventy-eight thousand, eight hundred forty-two".