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23128025849 is a prime number
BaseRepresentation
bin10101100010100010…
…011010101011111001
32012200211110110000222
4111202202122223321
5334331233311344
614342545505425
71446063655535
oct254242325371
965624413028
1023128025849
119899193155
124595642275
1322477661c6
1411958d6bc5
1590569d5ee
hex56289aaf9

23128025849 has 2 divisors, whose sum is σ = 23128025850. Its totient is φ = 23128025848.

The previous prime is 23128025777. The next prime is 23128025863. The reversal of 23128025849 is 94852082132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18980021824 + 4148004025 = 137768^2 + 64405^2 .

It is a cyclic number.

It is not a de Polignac number, because 23128025849 - 228 = 22859590393 is a prime.

It is not a weakly prime, because it can be changed into another prime (23128025449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11564012924 + 11564012925.

It is an arithmetic number, because the mean of its divisors is an integer number (11564012925).

Almost surely, 223128025849 is an apocalyptic number.

It is an amenable number.

23128025849 is a deficient number, since it is larger than the sum of its proper divisors (1).

23128025849 is an equidigital number, since it uses as much as digits as its factorization.

23128025849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 23128025849 in words is "twenty-three billion, one hundred twenty-eight million, twenty-five thousand, eight hundred forty-nine".