451046421431149 has 2 divisors, whose sum is σ = 451046421431150. Its totient is φ = 451046421431148.

The previous prime is 451046421431147. The next prime is 451046421431167. The reversal of 451046421431149 is 941134124640154.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419112733451049 + 31933687980100 = 20472243^2 + 5650990^2 .

It is a cyclic number.

It is not a de Polignac number, because 451046421431149 - 2¹ = 451046421431147 is a prime.

Together with 451046421431147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451046421431147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225523210715574 + 225523210715575.

It is an arithmetic number, because the mean of its divisors is an integer number (225523210715575).

Almost surely, 2^{451046421431149} is an apocalyptic number.

It is an amenable number.

451046421431149 is a deficient number, since it is larger than the sum of its proper divisors (1).

451046421431149 is an equidigital number, since it uses as much as digits as its factorization.

451046421431149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 451046421431149 in words is "four hundred fifty-one trillion, forty-six billion, four hundred twenty-one million, four hundred thirty-one thousand, one hundred forty-nine".