451371213603640 has 64 divisors (see below), whose sum is σ = 1107915328581120. Its totient is φ = 164134369296000.

The previous prime is 451371213603637. The next prime is 451371213603649. The reversal of 451371213603640 is 46306312173154.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451371213603649) 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, 124578045 + ... + 128150035.

It is an arithmetic number, because the mean of its divisors is an integer number (17311177009080).

Almost surely, 2^{451371213603640} is an apocalyptic number.

451371213603640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451371213603640 is an abundant number, since it is smaller than the sum of its proper divisors (656544114977480).

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

451371213603640 is a wasteful number, since it uses less digits than its factorization.

451371213603640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3859204 (or 3859200 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

Adding to 451371213603640 its reverse (46306312173154), we get a palindrome (497677525776794).

The spelling of 451371213603640 in words is "four hundred fifty-one trillion, three hundred seventy-one billion, two hundred thirteen million, six hundred three thousand, six hundred forty".