68732918280 has 1024 divisors, whose sum is σ = 276064588800. Its totient is φ = 15049359360.

The previous prime is 68732918279. The next prime is 68732918291. The reversal of 68732918280 is 8281923786.

It is a happy number.

68732918280 is a `hidden beast` number, since 6 + 8 + 73 + 291 + 8 + 280 = 666.

It is a super-3 number, since 3×68732918280³ (a number of 33 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 379739790 + ... + 379739970.

It is an arithmetic number, because the mean of its divisors is an integer number (269594325).

Almost surely, 2^68732918280 is an apocalyptic number.

68732918280 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 68732918280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138032294400).

68732918280 is an abundant number, since it is smaller than the sum of its proper divisors (207331670520).

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

68732918280 is a wasteful number, since it uses less digits than its factorization.

68732918280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 68732918280 in words is "sixty-eight billion, seven hundred thirty-two million, nine hundred eighteen thousand, two hundred eighty".