451601320664440 has 64 divisors (see below), whose sum is σ = 1016844970924800. Its totient is φ = 180508627740672.

The previous prime is 451601320664437. The next prime is 451601320664441. The reversal of 451601320664440 is 44466023106154.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451601320664441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1503588601 + ... + 1503888919.

It is an arithmetic number, because the mean of its divisors is an integer number (15888202670700).

Almost surely, 2^{451601320664440} is an apocalyptic number.

451601320664440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451601320664440 is an abundant number, since it is smaller than the sum of its proper divisors (565243650260360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451601320664440 is a wasteful number, since it uses less digits than its factorization.

451601320664440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327656 (or 327652 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 46.

The spelling of 451601320664440 in words is "four hundred fifty-one trillion, six hundred one billion, three hundred twenty million, six hundred sixty-four thousand, four hundred forty".