68785297380 has 144 divisors (see below), whose sum is σ = 214090950528. Its totient is φ = 17865792000.

The previous prime is 68785297349. The next prime is 68785297387. The reversal of 68785297380 is 8379258786.

68785297380 is a `hidden beast` number, since 6 + 8 + 78 + 529 + 7 + 38 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (68785297387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4649395 + ... + 4664165.

It is an arithmetic number, because the mean of its divisors is an integer number (1486742712).

Almost surely, 2^68785297380 is an apocalyptic number.

68785297380 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 68785297380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107045475264).

68785297380 is an abundant number, since it is smaller than the sum of its proper divisors (145305653148).

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

68785297380 is a wasteful number, since it uses less digits than its factorization.

68785297380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15458 (or 15453 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 68785297380 in words is "sixty-eight billion, seven hundred eighty-five million, two hundred ninety-seven thousand, three hundred eighty".