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12502515145 = 523115394291
BaseRepresentation
bin10111010010011010…
…10011110111001001
31012021022200120112111
423221031103313021
5201101120441040
65424340142321
7621552424321
oct135115236711
935238616474
1012502515145
11533638674a
12250b0979a1
1312432ba673
1486866a281
154d2933dea
hex2e9353dc9

12502515145 has 16 divisors (see below), whose sum is σ = 15669067392. Its totient is φ = 9558743040.

The previous prime is 12502515143. The next prime is 12502515149. The reversal of 12502515145 is 54151520521.

It is not a de Polignac number, because 12502515145 - 21 = 12502515143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12502515143) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 85450 + ... + 179740.

It is an arithmetic number, because the mean of its divisors is an integer number (979316712).

Almost surely, 212502515145 is an apocalyptic number.

It is an amenable number.

12502515145 is a deficient number, since it is larger than the sum of its proper divisors (3166552247).

12502515145 is a wasteful number, since it uses less digits than its factorization.

12502515145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95472.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 12502515145 in words is "twelve billion, five hundred two million, five hundred fifteen thousand, one hundred forty-five".

Divisors: 1 5 23 115 1153 5765 26519 94291 132595 471455 2168693 10843465 108717523 543587615 2500503029 12502515145