68727693888 has 392 divisors, whose sum is σ = 235672205312. Its totient is φ = 19470108672.

The previous prime is 68727693887. The next prime is 68727693901. The reversal of 68727693888 is 88839672786.

It is a Harshad number since it is a multiple of its sum of digits (72).

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

It is not an unprimeable number, because it can be changed into a prime (68727693883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 41476356 + ... + 41478012.

Almost surely, 2^68727693888 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 68727693888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117836102656).

68727693888 is an abundant number, since it is smaller than the sum of its proper divisors (166944511424).

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

68727693888 is a wasteful number, since it uses less digits than its factorization.

68727693888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821 (or 1796 counting only the distinct ones).

The product of its digits is 390168576, while the sum is 72.

The spelling of 68727693888 in words is "sixty-eight billion, seven hundred twenty-seven million, six hundred ninety-three thousand, eight hundred eighty-eight".