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13757764643 = 73713971423
BaseRepresentation
bin11001101000000011…
…01101010000100011
31022111210122212010122
430310001231100203
5211133441432033
610153100350455
7664634033000
oct146401552043
938453585118
1013757764643
11591a999227
1227bb54542b
1313b338774c
1494725c8a7
15557c34a98
hex33406d423

13757764643 has 32 divisors (see below), whose sum is σ = 16322457600. Its totient is φ = 11588844960.

The previous prime is 13757764627. The next prime is 13757764661. The reversal of 13757764643 is 34646775731.

It is not a de Polignac number, because 13757764643 - 24 = 13757764627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13757764673) 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, 9667430 + ... + 9668852.

It is an arithmetic number, because the mean of its divisors is an integer number (510076800).

Almost surely, 213757764643 is an apocalyptic number.

13757764643 is a deficient number, since it is larger than the sum of its proper divisors (2564692957).

13757764643 is an equidigital number, since it uses as much as digits as its factorization.

13757764643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912 (or 1898 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 53.

The spelling of 13757764643 in words is "thirteen billion, seven hundred fifty-seven million, seven hundred sixty-four thousand, six hundred forty-three".

Divisors: 1 7 49 71 343 397 497 1423 2779 3479 9961 19453 24353 28187 69727 101033 136171 197309 488089 564931 707231 1381163 3954517 4950617 9668141 27681619 34654319 40110101 193771333 280770707 1965394949 13757764643