451212000000 has 504 divisors, whose sum is σ = 1580886014400. Its totient is φ = 113932800000.

The previous prime is 451211999999. The next prime is 451212000011. The reversal of 451212000000 is 212154.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 227999011 + ... + 228000989.

It is an arithmetic number, because the mean of its divisors is an integer number (3136678600).

Almost surely, 2^451212000000 is an apocalyptic number.

451212000000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451212000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (790443007200).

451212000000 is an abundant number, since it is smaller than the sum of its proper divisors (1129674014400).

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

451212000000 is an frugal number, since it uses more digits than its factorization.

451212000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047 (or 2008 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 451212000000 its reverse (212154), we get a palindrome (451212212154).

The spelling of 451212000000 in words is "four hundred fifty-one billion, two hundred twelve million", and thus it is an aban number.