451128538397 has 2 divisors, whose sum is σ = 451128538398. Its totient is φ = 451128538396.

The previous prime is 451128538391. The next prime is 451128538429. The reversal of 451128538397 is 793835821154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 368095810681 + 83032727716 = 606709^2 + 288154^2 .

It is a cyclic number.

It is not a de Polignac number, because 451128538397 - 2³⁴ = 433948669213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451128538391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225564269198 + 225564269199.

It is an arithmetic number, because the mean of its divisors is an integer number (225564269199).

Almost surely, 2^451128538397 is an apocalyptic number.

It is an amenable number.

451128538397 is a deficient number, since it is larger than the sum of its proper divisors (1).

451128538397 is an equidigital number, since it uses as much as digits as its factorization.

451128538397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7257600, while the sum is 56.

The spelling of 451128538397 in words is "four hundred fifty-one billion, one hundred twenty-eight million, five hundred thirty-eight thousand, three hundred ninety-seven".