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68097168100 = 22521352382437
BaseRepresentation
bin111111011010111010…
…000101001011100100
320111202210211120020001
4333122322011023210
52103430333334400
651141114351044
74630340243533
oct773272051344
9214683746201
1068097168100
1126975092325
121124572b484
136563161b10
14342001231a
151b88543a6a
hexfdae852e4

68097168100 has 36 divisors (see below), whose sum is σ = 159137846644. Its totient is φ = 25143569280.

The previous prime is 68097168067. The next prime is 68097168103. The reversal of 68097168100 is 186179086.

It can be written as a sum of positive squares in 6 ways, for example, as 22092065956 + 46005102144 = 148634^2 + 214488^2 .

It is a super-2 number, since 2×680971681002 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68097168103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26189919 + ... + 26192518.

Almost surely, 268097168100 is an apocalyptic number.

It is an amenable number.

68097168100 is an abundant number, since it is smaller than the sum of its proper divisors (91040678544).

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

68097168100 is a wasteful number, since it uses less digits than its factorization.

68097168100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52382464 (or 52382457 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 68097168100 in words is "sixty-eight billion, ninety-seven million, one hundred sixty-eight thousand, one hundred".

Divisors: 1 2 4 5 10 13 20 25 26 50 52 65 100 130 260 325 650 1300 52382437 104764874 209529748 261912185 523824370 680971681 1047648740 1309560925 1361943362 2619121850 2723886724 3404858405 5238243700 6809716810 13619433620 17024292025 34048584050 68097168100