68634763344 has 240 divisors, whose sum is σ = 236566525440. Its totient is φ = 18977172480.

The previous prime is 68634763303. The next prime is 68634763349. The reversal of 68634763344 is 44336743686.

It is a super-3 number, since 3×68634763344³ (a number of 33 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68634763349) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 603912 + ... + 708504.

It is an arithmetic number, because the mean of its divisors is an integer number (985693856).

Almost surely, 2^68634763344 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 68634763344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118283262720).

68634763344 is an abundant number, since it is smaller than the sum of its proper divisors (167931762096).

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

68634763344 is a wasteful number, since it uses less digits than its factorization.

68634763344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104655 (or 104636 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 54.

The spelling of 68634763344 in words is "sixty-eight billion, six hundred thirty-four million, seven hundred sixty-three thousand, three hundred forty-four".