451145002003 has 4 divisors (see below), whose sum is σ = 466701726240. Its totient is φ = 435588277768.

The previous prime is 451145001977. The next prime is 451145002039. The reversal of 451145002003 is 300200541154.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451145002003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451145002603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7778362075 + ... + 7778362132.

It is an arithmetic number, because the mean of its divisors is an integer number (116675431560).

Almost surely, 2^451145002003 is an apocalyptic number.

451145002003 is a deficient number, since it is larger than the sum of its proper divisors (15556724237).

451145002003 is a wasteful number, since it uses less digits than its factorization.

451145002003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15556724236.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 451145002003 its reverse (300200541154), we get a palindrome (751345543157).

The spelling of 451145002003 in words is "four hundred fifty-one billion, one hundred forty-five million, two thousand, three".