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12545520641 is a prime number
BaseRepresentation
bin10111010111100010…
…10111010000000001
31012101022121110222122
423223301113100001
5201143123130031
65432514014025
7622614110633
oct135361272001
935338543878
1012545520641
11535868a385
122521577315
13124c1971c4
14870262a53
154d65cb47b
hex2ebc57401

12545520641 has 2 divisors, whose sum is σ = 12545520642. Its totient is φ = 12545520640.

The previous prime is 12545520619. The next prime is 12545520643. The reversal of 12545520641 is 14602554521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11923766416 + 621754225 = 109196^2 + 24935^2 .

It is a cyclic number.

It is not a de Polignac number, because 12545520641 - 26 = 12545520577 is a prime.

Together with 12545520643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12545520643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6272760320 + 6272760321.

It is an arithmetic number, because the mean of its divisors is an integer number (6272760321).

Almost surely, 212545520641 is an apocalyptic number.

It is an amenable number.

12545520641 is a deficient number, since it is larger than the sum of its proper divisors (1).

12545520641 is an equidigital number, since it uses as much as digits as its factorization.

12545520641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 12545520641 in words is "twelve billion, five hundred forty-five million, five hundred twenty thousand, six hundred forty-one".