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23439614309 = 198999137089
BaseRepresentation
bin10101110101000111…
…000010000101100101
32020111112202210001022
4111311013002011211
5341001020124214
614433520140525
71456566301646
oct256507020545
966445683038
1023439614309
119a39062181
124661a67745
132297190887
1411c50456cd
15922bead8e
hex5751c2165

23439614309 has 8 divisors (see below), whose sum is σ = 24676200000. Its totient is φ = 22203320832.

The previous prime is 23439614291. The next prime is 23439614369. The reversal of 23439614309 is 90341693432.

It is a happy number.

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-23439614309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23439614309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23439614369) 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, 102437 + ... + 239525.

It is an arithmetic number, because the mean of its divisors is an integer number (3084525000).

Almost surely, 223439614309 is an apocalyptic number.

It is an amenable number.

23439614309 is a deficient number, since it is larger than the sum of its proper divisors (1236585691).

23439614309 is a wasteful number, since it uses less digits than its factorization.

23439614309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146107.

The product of its (nonzero) digits is 419904, while the sum is 44.

The spelling of 23439614309 in words is "twenty-three billion, four hundred thirty-nine million, six hundred fourteen thousand, three hundred nine".

Divisors: 1 19 8999 137089 170981 2604691 1233663911 23439614309