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69490647317 = 7134147537477
BaseRepresentation
bin100000010110111110…
…1110010000100010101
320122100220220122100102
41000231331302010111
52114304101203232
651531253423445
75010020520260
oct1005575620425
9218326818312
1069490647317
112751a727943
121157433ab85
136725a69530
143513107cd7
151c1aa4b662
hex102df72115

69490647317 has 64 divisors (see below), whose sum is σ = 91177519104. Its totient is φ = 51501864960.

The previous prime is 69490647307. The next prime is 69490647377. The reversal of 69490647317 is 71374609496.

It is not a de Polignac number, because 69490647317 - 212 = 69490643221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69490647307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9290183 + ... + 9297659.

It is an arithmetic number, because the mean of its divisors is an integer number (1424648736).

Almost surely, 269490647317 is an apocalyptic number.

It is an amenable number.

69490647317 is a deficient number, since it is larger than the sum of its proper divisors (21686871787).

69490647317 is a wasteful number, since it uses less digits than its factorization.

69490647317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7638.

The product of its (nonzero) digits is 6858432, while the sum is 56.

The spelling of 69490647317 in words is "sixty-nine billion, four hundred ninety million, six hundred forty-seven thousand, three hundred seventeen".

Divisors: 1 7 13 41 47 53 91 287 329 371 533 611 689 1927 2173 2491 3731 4277 4823 7477 13489 15211 17437 25051 28249 32383 52339 97201 102131 175357 197743 226681 306557 351419 396281 680407 714917 1327703 2145899 2459933 2773967 3985241 4568447 5151653 9293921 14408179 16247521 18625207 27896687 31979129 36061571 100857253 113732647 130376449 187306327 211217773 242127691 763633487 1311144289 1478524411 1694893837 5345434409 9927235331 69490647317