6441406051 has 4 divisors (see below), whose sum is σ = 6445751032. Its totient is φ = 6437061072.

The previous prime is 6441406033. The next prime is 6441406123. The reversal of 6441406051 is 1506041446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6441406051 - 2⁵ = 6441406019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6441476051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2170266 + ... + 2173231.

It is an arithmetic number, because the mean of its divisors is an integer number (1611437758).

Almost surely, 2^6441406051 is an apocalyptic number.

6441406051 is a deficient number, since it is larger than the sum of its proper divisors (4344981).

6441406051 is a wasteful number, since it uses less digits than its factorization.

6441406051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4344980.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 6441406051 is about 80258.3705977140. The cubic root of 6441406051 is about 1860.6308850561.

Adding to 6441406051 its reverse (1506041446), we get a palindrome (7947447497).

The spelling of 6441406051 in words is "six billion, four hundred forty-one million, four hundred six thousand, fifty-one".