Search a number
BaseRepresentation
bin1011010011111111011110…
…0011010001100100100111
31122001001212102112211011102
42310333313203101210213
53112241143341310122
642241550544430315
72422423206455105
oct264776743214447
948031772484142
1012438083541287
113a65a63998468
12148a70101839b
136c2ba2036331
143100139dcc75
15168822e41492
hexb4ff78d1927

12438083541287 has 2 divisors, whose sum is σ = 12438083541288. Its totient is φ = 12438083541286.

The previous prime is 12438083541241. The next prime is 12438083541307. The reversal of 12438083541287 is 78214538083421.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (78214538083421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12438083541287 - 214 = 12438083524903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12438083541787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6219041770643 + 6219041770644.

It is an arithmetic number, because the mean of its divisors is an integer number (6219041770644).

Almost surely, 212438083541287 is an apocalyptic number.

12438083541287 is a deficient number, since it is larger than the sum of its proper divisors (1).

12438083541287 is an equidigital number, since it uses as much as digits as its factorization.

12438083541287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10321920, while the sum is 56.

The spelling of 12438083541287 in words is "twelve trillion, four hundred thirty-eight billion, eighty-three million, five hundred forty-one thousand, two hundred eighty-seven".