168773379840 has 576 divisors, whose sum is σ = 656016076800. Its totient is φ = 40833662976.

The previous prime is 168773379839. The next prime is 168773379869. The reversal of 168773379840 is 48973377861.

It is a tau number, because it is divible by the number of its divisors (576).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26504337 + ... + 26510703.

It is an arithmetic number, because the mean of its divisors is an integer number (1138916800).

Almost surely, 2^168773379840 is an apocalyptic number.

168773379840 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 168773379840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328008038400).

168773379840 is an abundant number, since it is smaller than the sum of its proper divisors (487242696960).

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

168773379840 is a wasteful number, since it uses less digits than its factorization.

168773379840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6469 (or 6449 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 63.

The spelling of 168773379840 in words is "one hundred sixty-eight billion, seven hundred seventy-three million, three hundred seventy-nine thousand, eight hundred forty".