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68353469184 = 28371121359137
BaseRepresentation
bin111111101010001011…
…110010101100000000
320112102200010000012210
4333222023302230000
52104441442003214
651222352022120
74636601621160
oct775213625400
9215380100183
1068353469184
1126a9682a100
12112b7531940
1365a429c570
14344608c5a0
151ba0cbeb59
hexfea2f2b00

68353469184 has 864 divisors, whose sum is σ = 252104670720. Its totient is φ = 15993077760.

The previous prime is 68353469179. The next prime is 68353469213. The reversal of 68353469184 is 48196435386.

68353469184 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 498930364 + ... + 498930500.

Almost surely, 268353469184 is an apocalyptic number.

68353469184 is a gapful number since it is divisible by the number (64) 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 68353469184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126052335360).

68353469184 is an abundant number, since it is smaller than the sum of its proper divisors (183751201536).

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

68353469184 is a wasteful number, since it uses less digits than its factorization.

68353469184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 232 counting only the distinct ones).

The product of its digits is 14929920, while the sum is 57.

The spelling of 68353469184 in words is "sixty-eight billion, three hundred fifty-three million, four hundred sixty-nine thousand, one hundred eighty-four".