451440233231146 has 4 divisors (see below), whose sum is σ = 677160349846722. Its totient is φ = 225720116615572.

The previous prime is 451440233231107. The next prime is 451440233231161. The reversal of 451440233231146 is 641132332044154.

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

It can be written as a sum of positive squares in only one way, i.e., 305086831560225 + 146353401670921 = 17466735^2 + 12097661^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112860058307785 + ... + 112860058307788.

Almost surely, 2^{451440233231146} is an apocalyptic number.

451440233231146 is a deficient number, since it is larger than the sum of its proper divisors (225720116615576).

451440233231146 is a wasteful number, since it uses less digits than its factorization.

451440233231146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225720116615575.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 451440233231146 in words is "four hundred fifty-one trillion, four hundred forty billion, two hundred thirty-three million, two hundred thirty-one thousand, one hundred forty-six".