451128538439 has 4 divisors (see below), whose sum is σ = 451136320200. Its totient is φ = 451120756680.

The previous prime is 451128538429. The next prime is 451128538447. The reversal of 451128538439 is 934835821154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934835821154 = 2 ⋅467417910577.

It is a cyclic number.

It is not a de Polignac number, because 451128538439 - 2³² = 446833571143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451128538429) 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 in 3 ways as a sum of consecutive naturals, for example, 3803264 + ... + 3920085.

It is an arithmetic number, because the mean of its divisors is an integer number (112784080050).

Almost surely, 2^451128538439 is an apocalyptic number.

451128538439 is a deficient number, since it is larger than the sum of its proper divisors (7781761).

451128538439 is an equidigital number, since it uses as much as digits as its factorization.

451128538439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7781760.

The product of its digits is 4147200, while the sum is 53.

The spelling of 451128538439 in words is "four hundred fifty-one billion, one hundred twenty-eight million, five hundred thirty-eight thousand, four hundred thirty-nine".