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13012013012 = 2210132539901
BaseRepresentation
bin11000001111001001…
…11000111111010100
31020120211101202012212
430013210320333110
5203122033404022
65551100332552
7640310166665
oct140744707724
936524352185
1013012013012
115577a3aa69
122631844158
1312c4a198ab
148b61b536c
155125263e2
hex307938fd4

13012013012 has 24 divisors (see below), whose sum is σ = 23005871112. Its totient is φ = 6438960000.

The previous prime is 13012012967. The next prime is 13012013051. The reversal of 13012013012 is 21031021031.

It can be written as a sum of positive squares in 4 ways, for example, as 12304133776 + 707879236 = 110924^2 + 26606^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1309262 + ... + 1319162.

It is an arithmetic number, because the mean of its divisors is an integer number (958577963).

Almost surely, 213012013012 is an apocalyptic number.

It is an amenable number.

13012013012 is a deficient number, since it is larger than the sum of its proper divisors (9993858100).

13012013012 is a wasteful number, since it uses less digits than its factorization.

13012013012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13259 (or 13257 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 13012013012 its reverse (21031021031), we get a palindrome (34043034043).

The spelling of 13012013012 in words is "thirteen billion, twelve million, thirteen thousand, twelve".

Divisors: 1 2 4 101 202 404 3253 6506 9901 13012 19802 39604 328553 657106 1000001 1314212 2000002 4000004 32207953 64415906 128831812 3253003253 6506006506 13012013012