68658033240 has 480 divisors, whose sum is σ = 247852392480. Its totient is φ = 17014136832.

The previous prime is 68658033239. The next prime is 68658033287. The reversal of 68658033240 is 4233085686.

It is a happy number.

68658033240 is a `hidden beast` number, since 68 + 6 + 580 + 3 + 3 + 2 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 102017544 + ... + 102018216.

It is an arithmetic number, because the mean of its divisors is an integer number (516359151).

Almost surely, 2^68658033240 is an apocalyptic number.

68658033240 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 68658033240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123926196240).

68658033240 is an abundant number, since it is smaller than the sum of its proper divisors (179194359240).

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

68658033240 is a wasteful number, since it uses less digits than its factorization.

68658033240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 68658033240 in words is "sixty-eight billion, six hundred fifty-eight million, thirty-three thousand, two hundred forty".