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68900641811 = 196835309443
BaseRepresentation
bin100000000101011001…
…1000101110000010011
320120211210201020221122
41000022303011300103
52112102031014221
651352535512455
74656264535511
oct1001263056023
9216753636848
1068900641811
1127247685a91
121142a82872b
13666075cb51
143498a034b1
151bd3d54eab
hex100acc5c13

68900641811 has 8 divisors (see below), whose sum is σ = 72633193920. Its totient is φ = 65178709992.

The previous prime is 68900641763. The next prime is 68900641837. The reversal of 68900641811 is 11814600986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68900641811 - 214 = 68900625427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68900641211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2641745 + ... + 2667698.

It is an arithmetic number, because the mean of its divisors is an integer number (9079149240).

Almost surely, 268900641811 is an apocalyptic number.

68900641811 is a deficient number, since it is larger than the sum of its proper divisors (3732552109).

68900641811 is a wasteful number, since it uses less digits than its factorization.

68900641811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5310145.

The product of its (nonzero) digits is 82944, while the sum is 44.

The spelling of 68900641811 in words is "sixty-eight billion, nine hundred million, six hundred forty-one thousand, eight hundred eleven".

Divisors: 1 19 683 12977 5309443 100879417 3626349569 68900641811