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13206145643 = 1959109710739
BaseRepresentation
bin11000100110010010…
…11100101001101011
31021002100200201010022
430103021130221223
5204021233130033
610022233311055
7645155246225
oct142311345153
937070621108
1013206145643
115667585759
12268686548b
131325ccb382
148d3cab415
155245c2098
hex31325ca6b

13206145643 has 16 divisors (see below), whose sum is σ = 14151024000. Its totient is φ = 12286677312.

The previous prime is 13206145637. The next prime is 13206145663. The reversal of 13206145643 is 34654160231.

13206145643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13206145643 - 210 = 13206144619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13206145663) 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 15 ways as a sum of consecutive naturals, for example, 1224368 + ... + 1235106.

It is an arithmetic number, because the mean of its divisors is an integer number (884439000).

Almost surely, 213206145643 is an apocalyptic number.

13206145643 is a deficient number, since it is larger than the sum of its proper divisors (944878357).

13206145643 is a wasteful number, since it uses less digits than its factorization.

13206145643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11914.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 13206145643 in words is "thirteen billion, two hundred six million, one hundred forty-five thousand, six hundred forty-three".

Divisors: 1 19 59 1097 1121 10739 20843 64723 204041 633601 1229737 11780683 12038419 223832977 695060297 13206145643