451340665223 has 4 divisors (see below), whose sum is σ = 515817903120. Its totient is φ = 386863427328.

The previous prime is 451340665109. The next prime is 451340665241. The reversal of 451340665223 is 322566043154.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 451340665223 - 2¹² = 451340661127 is a prime.

It is a super-3 number, since 3×451340665223³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451340665273) 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, 32238618938 + ... + 32238618951.

It is an arithmetic number, because the mean of its divisors is an integer number (128954475780).

Almost surely, 2^451340665223 is an apocalyptic number.

451340665223 is a deficient number, since it is larger than the sum of its proper divisors (64477237897).

451340665223 is an equidigital number, since it uses as much as digits as its factorization.

451340665223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64477237896.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 451340665223 in words is "four hundred fifty-one billion, three hundred forty million, six hundred sixty-five thousand, two hundred twenty-three".