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23121586589 is a prime number
BaseRepresentation
bin10101100010001001…
…110110100110011101
32012200101100022000212
4111202021312212131
5334323111232324
614342155502205
71445655146303
oct254211664635
965611308025
1023121586589
119895595252
124593457965
1322463202aa
141194adc273
15904d2a70e
hex56227699d

23121586589 has 2 divisors, whose sum is σ = 23121586590. Its totient is φ = 23121586588.

The previous prime is 23121586573. The next prime is 23121586613. The reversal of 23121586589 is 98568512132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22340384089 + 781202500 = 149467^2 + 27950^2 .

It is a cyclic number.

It is not a de Polignac number, because 23121586589 - 24 = 23121586573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23121586529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560793294 + 11560793295.

It is an arithmetic number, because the mean of its divisors is an integer number (11560793295).

Almost surely, 223121586589 is an apocalyptic number.

It is an amenable number.

23121586589 is a deficient number, since it is larger than the sum of its proper divisors (1).

23121586589 is an equidigital number, since it uses as much as digits as its factorization.

23121586589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 50.

The spelling of 23121586589 in words is "twenty-three billion, one hundred twenty-one million, five hundred eighty-six thousand, five hundred eighty-nine".