268178309392 has 80 divisors (see below), whose sum is σ = 611367675520. Its totient is φ = 111553127424.

The previous prime is 268178309381. The next prime is 268178309401. The reversal of 268178309392 is 293903871862.

It is a super-4 number, since 4×268178309392⁴ (a number of 47 digits) contains 4444 as substring.

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, 1615783 + ... + 1774009.

It is an arithmetic number, because the mean of its divisors is an integer number (7642095944).

Almost surely, 2^268178309392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268178309392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305683837760).

268178309392 is an abundant number, since it is smaller than the sum of its proper divisors (343189366128).

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

268178309392 is a wasteful number, since it uses less digits than its factorization.

268178309392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158688 (or 158682 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 268178309392 in words is "two hundred sixty-eight billion, one hundred seventy-eight million, three hundred nine thousand, three hundred ninety-two".