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68532041237 = 11103115313947
BaseRepresentation
bin111111110100110100…
…111111011000010101
320112220010010102000112
4333310310333120111
52110323200304422
651252211252405
74644200511332
oct776464773025
9215803112015
1068532041237
1127078606a10
12113472aa105
1366022934ba
143461a93989
151bb17e4ee2
hexff4d3f615

68532041237 has 16 divisors (see below), whose sum is σ = 74902593024. Its totient is φ = 62185014000.

The previous prime is 68532041213. The next prime is 68532041257. The reversal of 68532041237 is 73214023586.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68532041237 is a prime.

It is a super-2 number, since 2×685320412372 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68532041194 and 68532041203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68532041257) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17361098 + ... + 17365044.

It is an arithmetic number, because the mean of its divisors is an integer number (4681412064).

Almost surely, 268532041237 is an apocalyptic number.

It is an amenable number.

68532041237 is a deficient number, since it is larger than the sum of its proper divisors (6370551787).

68532041237 is a wasteful number, since it uses less digits than its factorization.

68532041237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6520.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 68532041237 in words is "sixty-eight billion, five hundred thirty-two million, forty-one thousand, two hundred thirty-seven".

Divisors: 1 11 1031 1531 3947 11341 16841 43417 1578461 4069357 6042857 17363071 44762927 66471427 6230185567 68532041237