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12890307497 = 53253995791
BaseRepresentation
bin11000000000101001…
…00111101110101001
31020021100101110122012
430000110213232221
5202344404314442
65531032005305
7634301543264
oct140024475651
936240343565
1012890307497
1155152738a1
1225b8b30835
1312a57465b2
148a3d73cdb
155069d5582
hex300527ba9

12890307497 has 8 divisors (see below), whose sum is σ = 13138830720. Its totient is φ = 12641981040.

The previous prime is 12890307481. The next prime is 12890307509. The reversal of 12890307497 is 79470309821.

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

It is a cyclic number.

It is not a de Polignac number, because 12890307497 - 24 = 12890307481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12890307407) 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, 86672 + ... + 182462.

It is an arithmetic number, because the mean of its divisors is an integer number (1642353840).

Almost surely, 212890307497 is an apocalyptic number.

It is an amenable number.

12890307497 is a deficient number, since it is larger than the sum of its proper divisors (248523223).

12890307497 is an equidigital number, since it uses as much as digits as its factorization.

12890307497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98383.

The product of its (nonzero) digits is 762048, while the sum is 50.

The spelling of 12890307497 in words is "twelve billion, eight hundred ninety million, three hundred seven thousand, four hundred ninety-seven".

Divisors: 1 53 2539 95791 134567 5076923 243213349 12890307497