68929424172 has 192 divisors, whose sum is σ = 211072942080. Its totient is φ = 19036296000.

The previous prime is 68929424149. The next prime is 68929424183. The reversal of 68929424172 is 27142492986.

It is a happy number.

68929424172 is a `hidden beast` number, since 68 + 92 + 9 + 424 + 1 + 72 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34004623 + ... + 34006649.

It is an arithmetic number, because the mean of its divisors is an integer number (1099338240).

Almost surely, 2^68929424172 is an apocalyptic number.

68929424172 is a gapful number since it is divisible by the number (62) 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 68929424172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105536471040).

68929424172 is an abundant number, since it is smaller than the sum of its proper divisors (142143517908).

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

68929424172 is a wasteful number, since it uses less digits than its factorization.

68929424172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3529 (or 3521 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 68929424172 in words is "sixty-eight billion, nine hundred twenty-nine million, four hundred twenty-four thousand, one hundred seventy-two".