68443494210 has 576 divisors, whose sum is σ = 236541876480. Its totient is φ = 13925882880.

The previous prime is 68443494191. The next prime is 68443494257. The reversal of 68443494210 is 1249434486.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 83365600 + ... + 83366420.

It is an arithmetic number, because the mean of its divisors is an integer number (410662980).

Almost surely, 2^68443494210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68443494210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118270938240).

68443494210 is an abundant number, since it is smaller than the sum of its proper divisors (168098382270).

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

68443494210 is a wasteful number, since it uses less digits than its factorization.

68443494210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 68443494210 in words is "sixty-eight billion, four hundred forty-three million, four hundred ninety-four thousand, two hundred ten".