68664245080 has 128 divisors (see below), whose sum is σ = 171412433280. Its totient is φ = 24622202880.

The previous prime is 68664245077. The next prime is 68664245101. The reversal of 68664245080 is 8054246686.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3760132 + ... + 3778348.

It is an arithmetic number, because the mean of its divisors is an integer number (1339159635).

Almost surely, 2^68664245080 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 68664245080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85706216640).

68664245080 is an abundant number, since it is smaller than the sum of its proper divisors (102748188200).

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

68664245080 is a wasteful number, since it uses less digits than its factorization.

68664245080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18509 (or 18505 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 49.

The spelling of 68664245080 in words is "sixty-eight billion, six hundred sixty-four million, two hundred forty-five thousand, eighty".