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12237900649 = 134991886527
BaseRepresentation
bin10110110010110111…
…11000101101101001
31011120212202202200121
423121123320231221
5200030400310044
65342204403241
7612160303432
oct133133705551
934525682617
1012237900649
11520aa80987
122456546521
13120052bc40
14841468489
154b95b4984
hex2d96f8b69

12237900649 has 8 divisors (see below), whose sum is σ = 13205696000. Its totient is φ = 11273879376.

The previous prime is 12237900637. The next prime is 12237900667. The reversal of 12237900649 is 94600973221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12237900649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12237900149) 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, 936777 + ... + 949750.

It is an arithmetic number, because the mean of its divisors is an integer number (1650712000).

Almost surely, 212237900649 is an apocalyptic number.

It is an amenable number.

12237900649 is a deficient number, since it is larger than the sum of its proper divisors (967795351).

12237900649 is a wasteful number, since it uses less digits than its factorization.

12237900649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887039.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 12237900649 in words is "twelve billion, two hundred thirty-seven million, nine hundred thousand, six hundred forty-nine".

Divisors: 1 13 499 6487 1886527 24524851 941376973 12237900649