68594739840 has 768 divisors, whose sum is σ = 271304691840. Its totient is φ = 16422912000.

The previous prime is 68594739827. The next prime is 68594739841. The reversal of 68594739840 is 4893749586.

68594739840 is a `hidden beast` number, since 6 + 8 + 594 + 7 + 39 + 8 + 4 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (68594739841) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 172782522 + ... + 172782918.

Almost surely, 2^68594739840 is an apocalyptic number.

68594739840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68594739840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135652345920).

68594739840 is an abundant number, since it is smaller than the sum of its proper divisors (202709952000).

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

68594739840 is a wasteful number, since it uses less digits than its factorization.

68594739840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 68594739840 in words is "sixty-eight billion, five hundred ninety-four million, seven hundred thirty-nine thousand, eight hundred forty".