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71030207457 = 32112070734649
BaseRepresentation
bin100001000100110111…
…0101111001111100001
320210100012212101211100
41002021232233033201
52130432213114312
652344131505013
75063123541636
oct1021156571741
9223305771740
1071030207457
112813a7781a0
1211923a58169
13690ca00071
14361b78818d
151caacac5dc
hex1089baf3e1

71030207457 has 24 divisors (see below), whose sum is σ = 111935023200. Its totient is φ = 43045289280.

The previous prime is 71030207419. The next prime is 71030207467. The reversal of 71030207457 is 75470203017.

It is not a de Polignac number, because 71030207457 - 214 = 71030191073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71030207467) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2032669 + ... + 2067317.

It is an arithmetic number, because the mean of its divisors is an integer number (4663959300).

Almost surely, 271030207457 is an apocalyptic number.

It is an amenable number.

71030207457 is a deficient number, since it is larger than the sum of its proper divisors (40904815743).

71030207457 is a wasteful number, since it uses less digits than its factorization.

71030207457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55373 (or 55370 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The spelling of 71030207457 in words is "seventy-one billion, thirty million, two hundred seven thousand, four hundred fifty-seven".

Divisors: 1 3 9 11 33 99 20707 34649 62121 103947 186363 227777 311841 381139 683331 1143417 2049993 3430251 717476843 2152430529 6457291587 7892245273 23676735819 71030207457