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129471192914 = 27313674791697
BaseRepresentation
bin111100010010100010…
…1011001111101010010
3110101012001220001200012
41320211011121331102
54110124111133124
6135251144554522
712232262660510
oct1704505317522
9411161801605
10129471192914
114a9aa127588
1221113782a42
13c29447472b
1463a31754b0
15357b709e0e
hex1e25159f52

129471192914 has 64 divisors (see below), whose sum is σ = 230349864960. Its totient is φ = 53408125440.

The previous prime is 129471192901. The next prime is 129471192967. The reversal of 129471192914 is 419291174921.

It is a super-2 number, since 2×1294711929142 (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76293314 + ... + 76295010.

It is an arithmetic number, because the mean of its divisors is an integer number (3599216640).

Almost surely, 2129471192914 is an apocalyptic number.

129471192914 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

129471192914 is a deficient number, since it is larger than the sum of its proper divisors (100878672046).

129471192914 is a wasteful number, since it uses less digits than its factorization.

129471192914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2583.

The product of its digits is 326592, while the sum is 50.

The spelling of 129471192914 in words is "one hundred twenty-nine billion, four hundred seventy-one million, one hundred ninety-two thousand, nine hundred fourteen".

Divisors: 1 2 7 14 31 62 217 367 434 479 734 958 1697 2569 3353 3394 5138 6706 11377 11879 14849 22754 23758 29698 52607 79639 103943 105214 159278 175793 207886 351586 368249 622799 736498 812863 1230551 1245598 1625726 2461102 4359593 5449583 5690041 8719186 10899166 11380082 19306769 25198753 38147081 38613538 50397506 76294162 135147383 176391271 270294766 298320721 352782542 596641442 2088245047 4176490094 9247942351 18495884702 64735596457 129471192914