68921335296 has 160 divisors (see below), whose sum is σ = 222558969600. Its totient is φ = 20885207040.

The previous prime is 68921335289. The next prime is 68921335321. The reversal of 68921335296 is 69253312986.

68921335296 is a `hidden beast` number, since 6 + 89 + 2 + 1 + 33 + 529 + 6 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74556 + ... + 378683.

It is an arithmetic number, because the mean of its divisors is an integer number (1390993560).

Almost surely, 2^68921335296 is an apocalyptic number.

68921335296 is a gapful number since it is divisible by the number (66) 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 68921335296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111279484800).

68921335296 is an abundant number, since it is smaller than the sum of its proper divisors (153637634304).

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

68921335296 is a wasteful number, since it uses less digits than its factorization.

68921335296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453277 (or 453255 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 54.

The spelling of 68921335296 in words is "sixty-eight billion, nine hundred twenty-one million, three hundred thirty-five thousand, two hundred ninety-six".