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68539211093090 = 257639897227531
BaseRepresentation
bin11111001010110000001110…
…10101001001010001100010
322222200021200110120112202002
433211120013111021101202
532440421301014434330
6401434251235324002
720302536354553103
oct1745300725112142
9288607613515662
1068539211093090
111a9253529373a1
12782b437150602
132c322b20a503a
1412cd45bac83aa
157dccdec4ce45
hex3e5607549462

68539211093090 has 16 divisors (see below), whose sum is σ = 123386730200640. Its totient is φ = 27412095496560.

The previous prime is 68539211092931. The next prime is 68539211093113. The reversal of 68539211093090 is 9039011293586.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448537376 + ... + 448690155.

It is an arithmetic number, because the mean of its divisors is an integer number (7711670637540).

Almost surely, 268539211093090 is an apocalyptic number.

68539211093090 is a deficient number, since it is larger than the sum of its proper divisors (54847519107550).

68539211093090 is a wasteful number, since it uses less digits than its factorization.

68539211093090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897235177.

The product of its (nonzero) digits is 3149280, while the sum is 56.

The spelling of 68539211093090 in words is "sixty-eight trillion, five hundred thirty-nine billion, two hundred eleven million, ninety-three thousand, ninety".

Divisors: 1 2 5 10 7639 15278 38195 76390 897227531 1794455062 4486137655 8972275310 6853921109309 13707842218618 34269605546545 68539211093090