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71444244417 = 3713797328357
BaseRepresentation
bin100001010001001101…
…0001010011111000001
320211102001221122202120
41002202122022133001
52132304211310132
652453202034453
75106312025530
oct1024232123701
9224361848676
1071444244417
11283324602a7
1211a1a648a29
136977717850
14365a764317
151cd22e502c
hex10a268a7c1

71444244417 has 32 divisors (see below), whose sum is σ = 117389298432. Its totient is φ = 37637478144.

The previous prime is 71444244397. The next prime is 71444244419.

71444244417 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 71444244417 - 220 = 71443195841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71444244419) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53403 + ... + 381759.

It is an arithmetic number, because the mean of its divisors is an integer number (3668415576).

Almost surely, 271444244417 is an apocalyptic number.

It is an amenable number.

71444244417 is a deficient number, since it is larger than the sum of its proper divisors (45945054015).

71444244417 is a wasteful number, since it uses less digits than its factorization.

71444244417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329177.

The product of its digits is 401408, while the sum is 42.

The spelling of 71444244417 in words is "seventy-one billion, four hundred forty-four million, two hundred forty-four thousand, four hundred seventeen".

Divisors: 1 3 7 13 21 39 91 273 797 2391 5579 10361 16737 31083 72527 217581 328357 985071 2298499 4268641 6895497 12805923 29880487 89641461 261700529 785101587 1831903703 3402106877 5495711109 10206320631 23814748139 71444244417