101568681720 has 768 divisors, whose sum is σ = 392302310400. Its totient is φ = 22539264000.

The previous prime is 101568681703. The next prime is 101568681787. The reversal of 101568681720 is 27186865101.

101568681720 is a `hidden beast` number, since 1 + 0 + 1 + 568 + 6 + 81 + 7 + 2 + 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 pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 220322290 + ... + 220322750.

It is an arithmetic number, because the mean of its divisors is an integer number (510810300).

Almost surely, 2^101568681720 is an apocalyptic number.

101568681720 is a gapful number since it is divisible by the number (10) 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 101568681720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196151155200).

101568681720 is an abundant number, since it is smaller than the sum of its proper divisors (290733628680).

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

101568681720 is a wasteful number, since it uses less digits than its factorization.

101568681720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 101568681720 in words is "one hundred one billion, five hundred sixty-eight million, six hundred eighty-one thousand, seven hundred twenty".