6445122450 has 192 divisors, whose sum is σ = 18336326400. Its totient is φ = 1484144640.

The previous prime is 6445122443. The next prime is 6445122493. The reversal of 6445122450 is 542215446.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6596362 + ... + 6597338.

It is an arithmetic number, because the mean of its divisors is an integer number (95501700).

Almost surely, 2^6445122450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6445122450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9168163200).

6445122450 is an abundant number, since it is smaller than the sum of its proper divisors (11891203950).

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

6445122450 is a wasteful number, since it uses less digits than its factorization.

6445122450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221 (or 1216 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 6445122450 is about 80281.5199781369. The cubic root of 6445122450 is about 1860.9886494572.

Adding to 6445122450 its reverse (542215446), we get a palindrome (6987337896).

The spelling of 6445122450 in words is "six billion, four hundred forty-five million, one hundred twenty-two thousand, four hundred fifty".