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12807497253 = 34269165751
BaseRepresentation
bin10111110110110001…
…01110011000100101
31020001120120021100010
423323120232120211
5202212204403003
65514513040433
7632244634065
oct137330563045
936046507303
1012807497253
115482553281
122595256119
131291541055
14896d793a5
154ee5c9003
hex2fb62e625

12807497253 has 4 divisors (see below), whose sum is σ = 17076663008. Its totient is φ = 8538331500.

The previous prime is 12807497251. The next prime is 12807497267. The reversal of 12807497253 is 35279470821.

It is a happy number.

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.

It is not a de Polignac number, because 12807497253 - 21 = 12807497251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12807497251) 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 3 ways as a sum of consecutive naturals, for example, 2134582873 + ... + 2134582878.

It is an arithmetic number, because the mean of its divisors is an integer number (4269165752).

Almost surely, 212807497253 is an apocalyptic number.

It is an amenable number.

12807497253 is a deficient number, since it is larger than the sum of its proper divisors (4269165755).

12807497253 is an equidigital number, since it uses as much as digits as its factorization.

12807497253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269165754.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 12807497253 in words is "twelve billion, eight hundred seven million, four hundred ninety-seven thousand, two hundred fifty-three".

Divisors: 1 3 4269165751 12807497253