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12012600013 = 43279362791
BaseRepresentation
bin10110011000000000…
…11011101011001101
31011000011211022022121
423030000123223031
5144100211200023
65303555412541
7603453262321
oct131400335315
934004738277
1012012600013
115104888207
1223b2bb4151
13119595695b
1481d57b981
154a490dd5d
hex2cc01bacd

12012600013 has 4 divisors (see below), whose sum is σ = 12291962848. Its totient is φ = 11733237180.

The previous prime is 12012600007. The next prime is 12012600029. The reversal of 12012600013 is 31000621021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31000621021 = 232791331699.

It is a cyclic number.

It is not a de Polignac number, because 12012600013 - 25 = 12012599981 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12012600013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012600913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139681353 + ... + 139681438.

It is an arithmetic number, because the mean of its divisors is an integer number (3072990712).

Almost surely, 212012600013 is an apocalyptic number.

It is an amenable number.

12012600013 is a deficient number, since it is larger than the sum of its proper divisors (279362835).

12012600013 is an equidigital number, since it uses as much as digits as its factorization.

12012600013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279362834.

The product of its (nonzero) digits is 72, while the sum is 16.

The spelling of 12012600013 in words is "twelve billion, twelve million, six hundred thousand, thirteen".

Divisors: 1 43 279362791 12012600013