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13810871249 = 72385781809
BaseRepresentation
bin11001101110011000…
…10010101111010001
31022122111120221200222
430313030102233101
5211241040334444
610202234522425
7666150316520
oct146714225721
938574527628
1013810871249
115947970a8a
122815296415
1313c138cb86
149503244b7
1555c724eee
hex337312bd1

13810871249 has 8 divisors (see below), whose sum is σ = 16470107520. Its totient is φ = 11323198656.

The previous prime is 13810871171. The next prime is 13810871251. The reversal of 13810871249 is 94217801831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13810871249 - 220 = 13809822673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13810871299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42890744 + ... + 42891065.

It is an arithmetic number, because the mean of its divisors is an integer number (2058763440).

Almost surely, 213810871249 is an apocalyptic number.

It is an amenable number.

13810871249 is a deficient number, since it is larger than the sum of its proper divisors (2659236271).

13810871249 is an equidigital number, since it uses as much as digits as its factorization.

13810871249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85781839.

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 13810871249 in words is "thirteen billion, eight hundred ten million, eight hundred seventy-one thousand, two hundred forty-nine".

Divisors: 1 7 23 161 85781809 600472663 1972981607 13810871249