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20126256127165 = 5176733997103951
BaseRepresentation
bin1001001001110000000100…
…10110001101110010111101
32122021001101101122022020201
410210320002112031302331
510114222033032032130
6110445512513043501
74145034250264036
oct444700226156275
978231341568221
1020126256127165
11645a551991091
12231072a556591
13b2cb896433a6
144d818a405a8d
1524d7e41b8bca
hex124e0258dcbd

20126256127165 has 32 divisors (see below), whose sum is σ = 25954871745024. Its totient is φ = 14927126860800.

The previous prime is 20126256127163. The next prime is 20126256127177. The reversal of 20126256127165 is 56172165262102.

It is a happy number.

It is not a de Polignac number, because 20126256127165 - 21 = 20126256127163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20126256127163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193560940 + ... + 193664890.

It is an arithmetic number, because the mean of its divisors is an integer number (811089742032).

Almost surely, 220126256127165 is an apocalyptic number.

It is an amenable number.

20126256127165 is a deficient number, since it is larger than the sum of its proper divisors (5828615617859).

20126256127165 is a wasteful number, since it uses less digits than its factorization.

20126256127165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138037.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 20126256127165 in words is "twenty trillion, one hundred twenty-six billion, two hundred fifty-six million, one hundred twenty-seven thousand, one hundred sixty-five".

Divisors: 1 5 17 67 85 335 1139 5695 33997 103951 169985 519755 577949 1767167 2277799 2889745 6964717 8835835 11388995 34823585 38722583 118400189 193612915 592000945 3534022147 17670110735 60078376499 236779483849 300391882495 1183897419245 4025251225433 20126256127165