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21020244143432 = 2319249671465367
BaseRepresentation
bin1001100011110001010000…
…01011110110110101001000
32202102111220221210222012212
410301320220023312311020
510223343430000042212
6112412322234524252
74266443150115152
oct461705013666510
982374827728185
1021020244143432
1167746a9905586
122435a45296688
13b9627b6c8c71
1452955717dad2
15266bb89e1e22
hex131e282f6d48

21020244143432 has 48 divisors (see below), whose sum is σ = 41604904100160. Its totient is φ = 9954946336608.

The previous prime is 21020244143323. The next prime is 21020244143441. The reversal of 21020244143432 is 23434144202012.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13612013 + ... + 15077379.

It is an arithmetic number, because the mean of its divisors is an integer number (866768835420).

Almost surely, 221020244143432 is an apocalyptic number.

It is an amenable number.

21020244143432 is a deficient number, since it is larger than the sum of its proper divisors (20584659956728).

21020244143432 is a wasteful number, since it uses less digits than its factorization.

21020244143432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470378 (or 1470355 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 21020244143432 its reverse (23434144202012), we get a palindrome (44454388345444).

The spelling of 21020244143432 in words is "twenty-one trillion, twenty billion, two hundred forty-four million, one hundred forty-three thousand, four hundred thirty-two".

Divisors: 1 2 4 8 19 38 76 152 361 722 1444 2888 4967 9934 19868 39736 94373 188746 377492 754984 1465367 1793087 2930734 3586174 5861468 7172348 11722936 14344696 27841973 55683946 111367892 222735784 528997487 1057994974 2115989948 4231979896 7278477889 14556955778 29113911556 58227823112 138291079891 276582159782 553164319564 1106328639128 2627530517929 5255061035858 10510122071716 21020244143432