6445751450 has 48 divisors (see below), whose sum is σ = 13004027064. Its totient is φ = 2367436800.

The previous prime is 6445751443. The next prime is 6445751453. The reversal of 6445751450 is 541575446.

It can be written as a sum of positive squares in 12 ways, for example, as 849664201 + 5596087249 = 29149^2 + 74807^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6445751398 and 6445751407.

It is not an unprimeable number, because it can be changed into a prime (6445751453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57629 + ... + 127328.

Almost surely, 2^6445751450 is an apocalyptic number.

6445751450 is an abundant number, since it is smaller than the sum of its proper divisors (6558275614).

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

6445751450 is a wasteful number, since it uses less digits than its factorization.

6445751450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185027 (or 185022 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 41.

The square root of 6445751450 is about 80285.4373470058. The cubic root of 6445751450 is about 1861.0491874218.

The spelling of 6445751450 in words is "six billion, four hundred forty-five million, seven hundred fifty-one thousand, four hundred fifty".