451165414243 has 4 divisors (see below), whose sum is σ = 451166769648. Its totient is φ = 451164058840.

The previous prime is 451165414241. The next prime is 451165414267. The reversal of 451165414243 is 342414561154.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 451165414243 - 2¹ = 451165414241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 451165414196 and 451165414205.

It is not an unprimeable number, because it can be changed into a prime (451165414241) 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, 203730 + ... + 971512.

It is an arithmetic number, because the mean of its divisors is an integer number (112791692412).

Almost surely, 2^451165414243 is an apocalyptic number.

451165414243 is a deficient number, since it is larger than the sum of its proper divisors (1355405).

451165414243 is an equidigital number, since it uses as much as digits as its factorization.

451165414243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355404.

The product of its digits is 230400, while the sum is 40.

Adding to 451165414243 its reverse (342414561154), we get a palindrome (793579975397).

The spelling of 451165414243 in words is "four hundred fifty-one billion, one hundred sixty-five million, four hundred fourteen thousand, two hundred forty-three".