445721472000 has 1056 divisors, whose sum is σ = 1895922622464. Its totient is φ = 98537472000.

The previous prime is 445721471983. The next prime is 445721472029. The reversal of 445721472000 is 274127544.

445721472000 is a `hidden beast` number, since 4 + 4 + 572 + 14 + 72 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 249983109 + ... + 249984891.

Almost surely, 2^445721472000 is an apocalyptic number.

445721472000 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 445721472000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (947961311232).

445721472000 is an abundant number, since it is smaller than the sum of its proper divisors (1450201150464).

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

445721472000 is a wasteful number, since it uses less digits than its factorization.

445721472000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862 (or 1831 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 36.

Adding to 445721472000 its reverse (274127544), we get a palindrome (445995599544).

The spelling of 445721472000 in words is "four hundred forty-five billion, seven hundred twenty-one million, four hundred seventy-two thousand".