12340123020451 has 2 divisors, whose sum is σ = 12340123020452. Its totient is φ = 12340123020450.

The previous prime is 12340123020403. The next prime is 12340123020479. The reversal of 12340123020451 is 15402032104321.

It is an a-pointer prime, because the next prime (12340123020479) can be obtained adding 12340123020451 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12340123020451 - 2³⁵ = 12305763282083 is a prime.

It is a super-2 number, since 2×12340123020451² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12340123020851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6170061510225 + 6170061510226.

It is an arithmetic number, because the mean of its divisors is an integer number (6170061510226).

Almost surely, 2^{12340123020451} is an apocalyptic number.

12340123020451 is a deficient number, since it is larger than the sum of its proper divisors (1).

12340123020451 is an equidigital number, since it uses as much as digits as its factorization.

12340123020451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 12340123020451 its reverse (15402032104321), we get a palindrome (27742155124772).

The spelling of 12340123020451 in words is "twelve trillion, three hundred forty billion, one hundred twenty-three million, twenty thousand, four hundred fifty-one".