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27031987053 = 32831392571013
BaseRepresentation
bin11001001011001110…
…110110001101101101
32120202220110020000200
4121023032312031231
5420330142041203
620230205144113
71644610045611
oct311316661555
976686406020
1027031987053
1110511940a75
1252a4b5b039
13271a500116
1414461ab341
15a832a29a3
hex64b3b636d

27031987053 has 48 divisors (see below), whose sum is σ = 39995242560. Its totient is φ = 17589952512.

The previous prime is 27031987033. The next prime is 27031987061. The reversal of 27031987053 is 35078913072.

It is a happy number.

It is not a de Polignac number, because 27031987053 - 220 = 27030938477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27031987033) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26684575 + ... + 26685587.

It is an arithmetic number, because the mean of its divisors is an integer number (833234220).

Almost surely, 227031987053 is an apocalyptic number.

It is an amenable number.

27031987053 is a deficient number, since it is larger than the sum of its proper divisors (12963255507).

27031987053 is a wasteful number, since it uses less digits than its factorization.

27031987053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498 (or 1495 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 27031987053 in words is "twenty-seven billion, thirty-one million, nine hundred eighty-seven thousand, fifty-three".

Divisors: 1 3 9 83 139 249 257 417 747 771 1013 1251 2313 3039 9117 11537 21331 34611 35723 63993 84079 103833 107169 140807 191979 252237 260341 321507 422421 756711 781023 1267263 2343069 2965009 8895027 11686981 21608303 26685081 35060943 36187399 64824909 105182829 108562197 194474727 325686591 3003554117 9010662351 27031987053