1268843657850 has 192 divisors, whose sum is σ = 3681608112000. Its totient is φ = 320443776000.

The previous prime is 1268843657839. The next prime is 1268843657863. The reversal of 1268843657850 is 587563488621.

1268843657850 is a `hidden beast` number, since 1 + 2 + 6 + 8 + 8 + 4 + 3 + 6 + 578 + 50 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 102311650 + ... + 102324050.

It is an arithmetic number, because the mean of its divisors is an integer number (19175042250).

Almost surely, 2^{1268843657850} is an apocalyptic number.

1268843657850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1268843657850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1840804056000).

1268843657850 is an abundant number, since it is smaller than the sum of its proper divisors (2412764454150).

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

1268843657850 is a wasteful number, since it uses less digits than its factorization.

1268843657850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16430 (or 16419 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 63.

The spelling of 1268843657850 in words is "one trillion, two hundred sixty-eight billion, eight hundred forty-three million, six hundred fifty-seven thousand, eight hundred fifty".