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71430910374887 = 7471913113494631
BaseRepresentation
bin10000001111011101001110…
…000010011111001111100111
3100100220201122221221022012222
4100033131032002133033213
533330311001023444022
6411530523542502555
721021466356111110
oct2017351602371747
9310821587838188
1071430910374887
112083a751785588
128017957434a5b
1330b1ba149271b
14138d3bb377207
1583d13665a242
hex40f74e09f3e7

71430910374887 has 16 divisors (see below), whose sum is σ = 83415830648832. Its totient is φ = 59892478186560.

The previous prime is 71430910374781. The next prime is 71430910374931. The reversal of 71430910374887 is 78847301903417.

It is a cyclic number.

It is not a de Polignac number, because 71430910374887 - 28 = 71430910374631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71430910377887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56117939 + ... + 57376692.

It is an arithmetic number, because the mean of its divisors is an integer number (5213489415552).

Almost surely, 271430910374887 is an apocalyptic number.

71430910374887 is a deficient number, since it is larger than the sum of its proper divisors (11984920273945).

71430910374887 is a wasteful number, since it uses less digits than its factorization.

71430910374887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113496598.

The product of its (nonzero) digits is 28449792, while the sum is 62.

The spelling of 71430910374887 in words is "seventy-one trillion, four hundred thirty billion, nine hundred ten million, three hundred seventy-four thousand, eight hundred eighty-seven".

Divisors: 1 7 47 329 1913 13391 89911 629377 113494631 794462417 5334247657 37339733599 217115229103 1519806603721 10204415767841 71430910374887