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12653115040 = 25579081969
BaseRepresentation
bin10111100100010111…
…10011011010100000
31012122211001211202101
423302023303122200
5201403144140130
65451320100144
7625361463136
oct136213633240
935584054671
1012653115040
115403398675
122551604654
131268569627
1488066d756
154e0c811ca
hex2f22f36a0

12653115040 has 24 divisors (see below), whose sum is σ = 29892984660. Its totient is φ = 5061245952.

The previous prime is 12653115023. The next prime is 12653115073. The reversal of 12653115040 is 4051135621.

12653115040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10906878096 + 1746236944 = 104436^2 + 41788^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39540825 + ... + 39541144.

Almost surely, 212653115040 is an apocalyptic number.

12653115040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12653115040 is an abundant number, since it is smaller than the sum of its proper divisors (17239869620).

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

12653115040 is an equidigital number, since it uses as much as digits as its factorization.

12653115040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79081984 (or 79081976 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 12653115040 in words is "twelve billion, six hundred fifty-three million, one hundred fifteen thousand, forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 79081969 158163938 316327876 395409845 632655752 790819690 1265311504 1581639380 2530623008 3163278760 6326557520 12653115040