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13768657285 = 5314712171553
BaseRepresentation
bin11001101001010110…
…10000100110000101
31022112120011021000211
430310223100212011
5211144234013120
610154130035421
7665125440655
oct146453204605
938476137024
1013768657285
115926059009
122803118b71
1313b56cc6b6
14948896365
15558b8725a
hex334ad0985

13768657285 has 32 divisors (see below), whose sum is σ = 17443786752. Its totient is φ = 10417520640.

The previous prime is 13768657261. The next prime is 13768657291. The reversal of 13768657285 is 58275686731.

It is a happy number.

It is not a de Polignac number, because 13768657285 - 213 = 13768649093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8865069 + ... + 8866621.

It is an arithmetic number, because the mean of its divisors is an integer number (545118336).

Almost surely, 213768657285 is an apocalyptic number.

It is an amenable number.

13768657285 is a deficient number, since it is larger than the sum of its proper divisors (3675129467).

13768657285 is a wasteful number, since it uses less digits than its factorization.

13768657285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2853.

The product of its digits is 16934400, while the sum is 58.

The spelling of 13768657285 in words is "thirteen billion, seven hundred sixty-eight million, six hundred fifty-seven thousand, two hundred eighty-five".

Divisors: 1 5 31 47 155 235 1217 1457 1553 6085 7285 7765 37727 48143 57199 72991 188635 240715 285995 364955 1773169 1890001 2262721 8865845 9450005 11313605 58590031 88830047 292950155 444150235 2753731457 13768657285