68299652880 has 240 divisors, whose sum is σ = 245098442160. Its totient is φ = 16984276992.

The previous prime is 68299652867. The next prime is 68299652893. The reversal of 68299652880 is 8825699286.

68299652880 is a `hidden beast` number, since 6 + 8 + 29 + 9 + 6 + 528 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (68299652867) and next prime (68299652893).

It can be written as a sum of positive squares in 8 ways, for example, as 1264229136 + 67035423744 = 35556^2 + 258912^2 .

It is a tau number, because it is divible by the number of its divisors (240).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1308564 + ... + 1359756.

It is an arithmetic number, because the mean of its divisors is an integer number (1021243509).

Almost surely, 2^68299652880 is an apocalyptic number.

68299652880 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 68299652880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122549221080).

68299652880 is an abundant number, since it is smaller than the sum of its proper divisors (176798789280).

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

68299652880 is a wasteful number, since it uses less digits than its factorization.

68299652880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51338 (or 51329 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

The spelling of 68299652880 in words is "sixty-eight billion, two hundred ninety-nine million, six hundred fifty-two thousand, eight hundred eighty".