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68003781672960 = 222345721943
BaseRepresentation
bin11110111011001010111010…
…10000000000000000000000
322220210002122110122210220000
433131211131100000000000
532403133221102013320
6400344301144520000
720216053050563400
oct1735453520000000
9286702573583800
1068003781672960
111a7392729991a1
127763708a80000
132bc3962a90c53
1412b1587336800
157cde03a13c90
hex3dd95d400000

68003781672960 has 2760 divisors, whose sum is σ = 305480854689120. Its totient is φ = 14383174385664.

The previous prime is 68003781672949. The next prime is 68003781672973. The reversal of 68003781672960 is 6927618730086.

68003781672960 is a `hidden beast` number, since 6 + 80 + 0 + 378 + 167 + 29 + 6 + 0 = 666.

It is a super-2 number, since 2×680037816729602 (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

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, 1581483294699 + ... + 1581483294741.

Almost surely, 268003781672960 is an apocalyptic number.

68003781672960 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 68003781672960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152740427344560).

68003781672960 is an abundant number, since it is smaller than the sum of its proper divisors (237477073016160).

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

68003781672960 is an frugal number, since it uses more digits than its factorization.

68003781672960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 68003781672960 in words is "sixty-eight trillion, three billion, seven hundred eighty-one million, six hundred seventy-two thousand, nine hundred sixty".