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12917811473 = 712771445107
BaseRepresentation
bin11000000011111011…
…00010100100010001
31020100021010210222222
430001331202210101
5202423424431343
65533453310425
7635054404640
oct140175424421
936307123888
1012917811473
115529849a56
122606195415
1312ab356438
148a7893357
15509119a68
hex301f62911

12917811473 has 8 divisors (see below), whose sum is σ = 14774784192. Its totient is φ = 11063731536.

The previous prime is 12917811427. The next prime is 12917811499. The reversal of 12917811473 is 37411871921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12917811473 - 218 = 12917549329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12917811173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 713615 + ... + 731492.

It is an arithmetic number, because the mean of its divisors is an integer number (1846848024).

Almost surely, 212917811473 is an apocalyptic number.

It is an amenable number.

12917811473 is a deficient number, since it is larger than the sum of its proper divisors (1856972719).

12917811473 is a wasteful number, since it uses less digits than its factorization.

12917811473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446391.

The product of its digits is 84672, while the sum is 44.

The spelling of 12917811473 in words is "twelve billion, nine hundred seventeen million, eight hundred eleven thousand, four hundred seventy-three".

Divisors: 1 7 1277 8939 1445107 10115749 1845401639 12917811473