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12751387651481 is a prime number
BaseRepresentation
bin1011100110001110100111…
…1011100110110110011001
31200011000120010111200010112
42321203221323212312121
53132404320214321411
643041523455054105
72454154162453643
oct271435173466631
950130503450115
1012751387651481
1140769189a0656
12151b379b11335
137165b224349b
14321255a2d893
15171a5d5c3b8b
hexb98e9ee6d99

12751387651481 has 2 divisors, whose sum is σ = 12751387651482. Its totient is φ = 12751387651480.

The previous prime is 12751387651463. The next prime is 12751387651529. The reversal of 12751387651481 is 18415678315721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9672977039881 + 3078410611600 = 3110141^2 + 1754540^2 .

It is a cyclic number.

It is not a de Polignac number, because 12751387651481 - 26 = 12751387651417 is a prime.

It is a super-2 number, since 2×127513876514812 (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12751387651481.

It is not a weakly prime, because it can be changed into another prime (12751387651381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6375693825740 + 6375693825741.

It is an arithmetic number, because the mean of its divisors is an integer number (6375693825741).

Almost surely, 212751387651481 is an apocalyptic number.

It is an amenable number.

12751387651481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12751387651481 is an equidigital number, since it uses as much as digits as its factorization.

12751387651481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11289600, while the sum is 59.

The spelling of 12751387651481 in words is "twelve trillion, seven hundred fifty-one billion, three hundred eighty-seven million, six hundred fifty-one thousand, four hundred eighty-one".