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13688527964 = 2212312779961
BaseRepresentation
bin11001011111110011…
…00101110001011100
31022022222101021021012
430233321211301130
5211013230343324
610142144354352
7663133365536
oct145771456134
938288337235
1013688527964
1158948a9731
1227a03159b8
1313a1c254b7
1493bd98856
15551b0a20e
hex32fe65c5c

13688527964 has 12 divisors (see below), whose sum is σ = 23974392288. Its totient is φ = 6838701600.

The previous prime is 13688527961. The next prime is 13688528011. The reversal of 13688527964 is 46972588631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13688527961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385057 + ... + 1394904.

It is an arithmetic number, because the mean of its divisors is an integer number (1997866024).

Almost surely, 213688527964 is an apocalyptic number.

It is an amenable number.

13688527964 is a deficient number, since it is larger than the sum of its proper divisors (10285864324).

13688527964 is a wasteful number, since it uses less digits than its factorization.

13688527964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781196 (or 2781194 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 59.

The spelling of 13688527964 in words is "thirteen billion, six hundred eighty-eight million, five hundred twenty-seven thousand, nine hundred sixty-four".

Divisors: 1 2 4 1231 2462 4924 2779961 5559922 11119844 3422131991 6844263982 13688527964