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71432132071 = 82187006251
BaseRepresentation
bin100001010000110101…
…1111101010111100111
320211101020011021202011
41002201223331113213
52132243111211241
652452050255051
75106104050546
oct1024153752747
9224336137664
1071432132071
11283266380a3
1211a16587487
136975066691
143658cd015d
151cd1201281
hex10a1afd5e7

71432132071 has 4 divisors (see below), whose sum is σ = 71519139144. Its totient is φ = 71345125000.

The previous prime is 71432132069. The next prime is 71432132087. The reversal of 71432132071 is 17023123417.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71432132071 - 21 = 71432132069 is a prime.

It is a super-3 number, since 3×714321320713 (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71432132011) 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, 43502305 + ... + 43503946.

It is an arithmetic number, because the mean of its divisors is an integer number (17879784786).

Almost surely, 271432132071 is an apocalyptic number.

71432132071 is a deficient number, since it is larger than the sum of its proper divisors (87007073).

71432132071 is an equidigital number, since it uses as much as digits as its factorization.

71432132071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87007072.

The product of its (nonzero) digits is 7056, while the sum is 31.

Adding to 71432132071 its reverse (17023123417), we get a palindrome (88455255488).

The spelling of 71432132071 in words is "seventy-one billion, four hundred thirty-two million, one hundred thirty-two thousand, seventy-one".

Divisors: 1 821 87006251 71432132071