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23230245561 = 317676798433
BaseRepresentation
bin10101101000101000…
…010110101010111001
32012221221210202010020
4111220220112222321
5340033420324221
614401040441053
71451444554305
oct255050265271
965857722106
1023230245561
119940960356
124603919189
1322629a6143
1411a5304d05
1590e640ac6
hex568a16ab9

23230245561 has 16 divisors (see below), whose sum is σ = 33285132864. Its totient is φ = 14358288384.

The previous prime is 23230245551. The next prime is 23230245679. The reversal of 23230245561 is 16554203232.

It is a happy number.

It is not a de Polignac number, because 23230245561 - 26 = 23230245497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23230245541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3395800 + ... + 3402633.

It is an arithmetic number, because the mean of its divisors is an integer number (2080320804).

Almost surely, 223230245561 is an apocalyptic number.

It is an amenable number.

23230245561 is a deficient number, since it is larger than the sum of its proper divisors (10054887303).

23230245561 is a wasteful number, since it uses less digits than its factorization.

23230245561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6798520.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 23230245561 its reverse (16554203232), we get a palindrome (39784448793).

The spelling of 23230245561 in words is "twenty-three billion, two hundred thirty million, two hundred forty-five thousand, five hundred sixty-one".

Divisors: 1 3 17 51 67 201 1139 3417 6798433 20395299 115573361 346720083 455495011 1366485033 7743415187 23230245561