68630457320 has 64 divisors (see below), whose sum is σ = 159988746240. Its totient is φ = 26468467200.

The previous prime is 68630457319. The next prime is 68630457349. The reversal of 68630457320 is 2375403686.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233924 + ... + 438156.

It is an arithmetic number, because the mean of its divisors is an integer number (2499824160).

Almost surely, 2^68630457320 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 68630457320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79994373120).

68630457320 is an abundant number, since it is smaller than the sum of its proper divisors (91358288920).

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

68630457320 is a wasteful number, since it uses less digits than its factorization.

68630457320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204546 (or 204542 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 68630457320 in words is "sixty-eight billion, six hundred thirty million, four hundred fifty-seven thousand, three hundred twenty".