168071243340 has 576 divisors, whose sum is σ = 646312891392. Its totient is φ = 31747921920.

The previous prime is 168071243339. The next prime is 168071243371. The reversal of 168071243340 is 43342170861.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 44262322 + ... + 44266118.

It is an arithmetic number, because the mean of its divisors is an integer number (1122070992).

Almost surely, 2^168071243340 is an apocalyptic number.

168071243340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168071243340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323156445696).

168071243340 is an abundant number, since it is smaller than the sum of its proper divisors (478241648052).

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

168071243340 is a wasteful number, since it uses less digits than its factorization.

168071243340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3918 (or 3905 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 168071243340 in words is "one hundred sixty-eight billion, seventy-one million, two hundred forty-three thousand, three hundred forty".