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257144130147301 = 809317854301789
BaseRepresentation
bin111010011101111100001000…
…100010001001001111100101
31020201110201221120001101211021
4322131330020202021033211
5232201022134304203201
62310522214345411141
7105110023155245215
oct7235741042111745
91221421846041737
10257144130147301
1174a302388096a1
1224a10308a99ab1
13b06378375b6b7
14476dbb1404245
151eadd97a01ea1
hexe9df088893e5

257144130147301 has 4 divisors (see below), whose sum is σ = 257461984449900. Its totient is φ = 256826275844704.

The previous prime is 257144130147199. The next prime is 257144130147341. The reversal of 257144130147301 is 103741031441752.

257144130147301 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 226753452972225 + 30390677175076 = 15058335^2 + 5512774^2 .

It is a cyclic number.

It is not a de Polignac number, because 257144130147301 - 233 = 257135540212709 is a prime.

It is a super-2 number, since 2×2571441301473012 (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257144130147341) 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, 158927150086 + ... + 158927151703.

It is an arithmetic number, because the mean of its divisors is an integer number (64365496112475).

Almost surely, 2257144130147301 is an apocalyptic number.

It is an amenable number.

257144130147301 is a deficient number, since it is larger than the sum of its proper divisors (317854302599).

257144130147301 is an equidigital number, since it uses as much as digits as its factorization.

257144130147301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317854302598.

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 257144130147301 in words is "two hundred fifty-seven trillion, one hundred forty-four billion, one hundred thirty million, one hundred forty-seven thousand, three hundred one".

Divisors: 1 809 317854301789 257144130147301