68133473880 has 128 divisors (see below), whose sum is σ = 210036153600. Its totient is φ = 17668495872.

The previous prime is 68133473867. The next prime is 68133473893. The reversal of 68133473880 is 8837433186.

It is an interprime number because it is at equal distance from previous prime (68133473867) and next prime (68133473893).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13153131 + ... + 13158309.

It is an arithmetic number, because the mean of its divisors is an integer number (1640907450).

Almost surely, 2^68133473880 is an apocalyptic number.

68133473880 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 68133473880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105018076800).

68133473880 is an abundant number, since it is smaller than the sum of its proper divisors (141902679720).

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

68133473880 is a wasteful number, since it uses less digits than its factorization.

68133473880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8193 (or 8189 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 68133473880 in words is "sixty-eight billion, one hundred thirty-three million, four hundred seventy-three thousand, eight hundred eighty".