451543340353 has 4 divisors (see below), whose sum is σ = 516049531840. Its totient is φ = 387037148868.

The previous prime is 451543340327. The next prime is 451543340357. The reversal of 451543340353 is 353043345154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 353043345154 = 2 ⋅176521672577.

It is a cyclic number.

It is not a de Polignac number, because 451543340353 - 2²¹ = 451541243201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451543340357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32253095733 + ... + 32253095746.

It is an arithmetic number, because the mean of its divisors is an integer number (129012382960).

Almost surely, 2^451543340353 is an apocalyptic number.

It is an amenable number.

451543340353 is a deficient number, since it is larger than the sum of its proper divisors (64506191487).

451543340353 is an equidigital number, since it uses as much as digits as its factorization.

451543340353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64506191486.

The product of its (nonzero) digits is 648000, while the sum is 40.

The spelling of 451543340353 in words is "four hundred fifty-one billion, five hundred forty-three million, three hundred forty thousand, three hundred fifty-three".