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70851279213 = 321113239230341
BaseRepresentation
bin100000111111100010…
…0001011100101101101
320202212202011220102100
41001333010023211231
52130100411413323
652314300445313
75055521636151
oct1017704134555
9222782156370
1070851279213
1128058777810
1211893b49839
1368b1912c70
143601acd061
151c9a216943
hex107f10b96d

70851279213 has 48 divisors (see below), whose sum is σ = 120736062720. Its totient is φ = 39471062400.

The previous prime is 70851279203. The next prime is 70851279229. The reversal of 70851279213 is 31297215807.

It is not a de Polignac number, because 70851279213 - 210 = 70851278189 is a prime.

It is a super-2 number, since 2×708512792132 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70851279203) 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 47 ways as a sum of consecutive naturals, for example, 192423 + ... + 422763.

It is an arithmetic number, because the mean of its divisors is an integer number (2515334640).

Almost surely, 270851279213 is an apocalyptic number.

It is an amenable number.

70851279213 is a deficient number, since it is larger than the sum of its proper divisors (49884783507).

70851279213 is a wasteful number, since it uses less digits than its factorization.

70851279213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230610 (or 230607 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

It can be divided in two parts, 708 and 51279213, that added together give a square (51279921 = 71612).

The spelling of 70851279213 in words is "seventy billion, eight hundred fifty-one million, two hundred seventy-nine thousand, two hundred thirteen".

Divisors: 1 3 9 11 13 33 39 99 117 143 239 429 717 1287 2151 2629 3107 7887 9321 23661 27963 34177 102531 230341 307593 691023 2073069 2533751 2994433 7601253 8983299 22803759 26949897 32938763 55051499 98816289 165154497 296448867 495463491 605566489 715669487 1816699467 2147008461 5450098401 6441025383 7872364357 23617093071 70851279213