268180939840 has 112 divisors (see below), whose sum is σ = 696858168384. Its totient is φ = 97492736000.

The previous prime is 268180939837. The next prime is 268180939867. The reversal of 268180939840 is 48939081862.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15658962 + ... + 15676078.

It is an arithmetic number, because the mean of its divisors is an integer number (6221947932).

Almost surely, 2^268180939840 is an apocalyptic number.

268180939840 is a gapful number since it is divisible by the number (20) 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 268180939840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348429084192).

268180939840 is an abundant number, since it is smaller than the sum of its proper divisors (428677228544).

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

268180939840 is a wasteful number, since it uses less digits than its factorization.

268180939840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21596 (or 21586 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 58.

The spelling of 268180939840 in words is "two hundred sixty-eight billion, one hundred eighty million, nine hundred thirty-nine thousand, eight hundred forty".