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13689538527 = 373121028477
BaseRepresentation
bin11001011111111010…
…11100011111011111
31022100001021121111110
430233331130133133
5211014010213102
610142222153103
7663145105020
oct145775343737
938301247443
1013689538527
115895429a05
1227a0722793
1313a21ba472
1493c17cc47
15551c5986c
hex32ff5c7df

13689538527 has 16 divisors (see below), whose sum is σ = 21533161472. Its totient is φ = 7570251360.

The previous prime is 13689538493. The next prime is 13689538547. The reversal of 13689538527 is 72583598631.

It is a happy number.

It is not a de Polignac number, because 13689538527 - 215 = 13689505759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13689538547) 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, 10513588 + ... + 10514889.

It is an arithmetic number, because the mean of its divisors is an integer number (1345822592).

Almost surely, 213689538527 is an apocalyptic number.

13689538527 is a deficient number, since it is larger than the sum of its proper divisors (7843622945).

13689538527 is a wasteful number, since it uses less digits than its factorization.

13689538527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21028518.

The product of its digits is 10886400, while the sum is 57.

The spelling of 13689538527 in words is "thirteen billion, six hundred eighty-nine million, five hundred thirty-eight thousand, five hundred twenty-seven".

Divisors: 1 3 7 21 31 93 217 651 21028477 63085431 147199339 441598017 651882787 1955648361 4563179509 13689538527