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12542067708 = 2231045172309
BaseRepresentation
bin10111010111001000…
…01100001111111100
31012101002010001110020
423223210030033330
5201141232131313
65432312012140
7622542550032
oct135344141774
935332101406
1012542067708
115356741115
122520391050
13124b558651
1486da04552
154d6148323
hex2eb90c3fc

12542067708 has 12 divisors (see below), whose sum is σ = 29264824680. Its totient is φ = 4180689232.

The previous prime is 12542067691. The next prime is 12542067719. The reversal of 12542067708 is 80776024521.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 12542067708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522586143 + ... + 522586166.

It is an arithmetic number, because the mean of its divisors is an integer number (2438735390).

Almost surely, 212542067708 is an apocalyptic number.

It is an amenable number.

12542067708 is an abundant number, since it is smaller than the sum of its proper divisors (16722756972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12542067708 is a wasteful number, since it uses less digits than its factorization.

12542067708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045172316 (or 1045172314 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 12542067708 in words is "twelve billion, five hundred forty-two million, sixty-seven thousand, seven hundred eight".

Divisors: 1 2 3 4 6 12 1045172309 2090344618 3135516927 4180689236 6271033854 12542067708