68147641260408 has 128 divisors (see below), whose sum is σ = 186877417896000. Its totient is φ = 20612973158400.

The previous prime is 68147641260383. The next prime is 68147641260451. The reversal of 68147641260408 is 80406214674186.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4186098 + ... + 12402366.

Almost surely, 2^{68147641260408} is an apocalyptic number.

68147641260408 is a gapful number since it is divisible by the number (68) 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 68147641260408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93438708948000).

68147641260408 is an abundant number, since it is smaller than the sum of its proper divisors (118729776635592).

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

68147641260408 is a wasteful number, since it uses less digits than its factorization.

68147641260408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8217025 (or 8217021 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 57.

The spelling of 68147641260408 in words is "sixty-eight trillion, one hundred forty-seven billion, six hundred forty-one million, two hundred sixty thousand, four hundred eight".