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13039806881 = 37834246111
BaseRepresentation
bin11000010010011101…
…11010100110100001
31020122202200211020102
430021032322212201
5203201142310011
65553532152145
7641065346453
oct141116724641
936582624212
1013039806881
1155916a3a02
12263b008655
1312ca6cb67a
148b9b6c2d3
15514bb673b
hex3093ba9a1

13039806881 has 8 divisors (see below), whose sum is σ = 13553589504. Its totient is φ = 12534516720.

The previous prime is 13039806827. The next prime is 13039806907. The reversal of 13039806881 is 18860893031.

It is a happy number.

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 13039806881 - 218 = 13039544737 is a prime.

It is a super-2 number, since 2×130398068812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13039806811) 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, 2119985 + ... + 2126126.

It is an arithmetic number, because the mean of its divisors is an integer number (1694198688).

Almost surely, 213039806881 is an apocalyptic number.

It is an amenable number.

13039806881 is a deficient number, since it is larger than the sum of its proper divisors (513782623).

13039806881 is an equidigital number, since it uses as much as digits as its factorization.

13039806881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4246231.

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 13039806881 in words is "thirteen billion, thirty-nine million, eight hundred six thousand, eight hundred eighty-one".

Divisors: 1 37 83 3071 4246111 157106107 352427213 13039806881