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68211837702877 = 11131155081305237
BaseRepresentation
bin11111000001001110011100…
…10110110001001011011101
322221111222200020210012212211
433200213032112301023131
532420040320422443002
6401024030255400421
720240066632631161
oct1740471626611335
9287458606705784
1068211837702877
111a809529116960
127797ab2523111
132c0a46c11011b
1412bb683308ca1
157d452e34edd7
hex3e09ce5b12dd

68211837702877 has 16 divisors (see below), whose sum is σ = 74981680513344. Its totient is φ = 61536798544000.

The previous prime is 68211837702773. The next prime is 68211837702893. The reversal of 68211837702877 is 77820773811286.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68211837702877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68211837712877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223319103 + ... + 223624339.

It is an arithmetic number, because the mean of its divisors is an integer number (4686355032084).

Almost surely, 268211837702877 is an apocalyptic number.

It is an amenable number.

68211837702877 is a deficient number, since it is larger than the sum of its proper divisors (6769842810467).

68211837702877 is a wasteful number, since it uses less digits than its factorization.

68211837702877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460460.

The product of its (nonzero) digits is 88510464, while the sum is 67.

The spelling of 68211837702877 in words is "sixty-eight trillion, two hundred eleven billion, eight hundred thirty-seven million, seven hundred two thousand, eight hundred seventy-seven".

Divisors: 1 11 131 1441 155081 305237 1705891 3357607 20315611 39986047 223471721 439846517 47336459197 520701051167 6201076154807 68211837702877