6445481200 has 60 divisors (see below), whose sum is σ = 15671918808. Its totient is φ = 2547116800.

The previous prime is 6445481197. The next prime is 6445481227. The reversal of 6445481200 is 21845446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63871 + ... + 130270.

Almost surely, 2^6445481200 is an apocalyptic number.

It is an amenable number.

6445481200 is an abundant number, since it is smaller than the sum of its proper divisors (9226437608).

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

6445481200 is a wasteful number, since it uses less digits than its factorization.

6445481200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194242 (or 194231 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 6445481200 is about 80283.7542719572. The cubic root of 6445481200 is about 1861.0231777534.

The spelling of 6445481200 in words is "six billion, four hundred forty-five million, four hundred eighty-one thousand, two hundred".