6447745051 has 8 divisors (see below), whose sum is σ = 7166619504. Its totient is φ = 5750989920.

The previous prime is 6447745049. The next prime is 6447745061. The reversal of 6447745051 is 1505477446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6447745051 - 2¹ = 6447745049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6447744989 and 6447745007.

It is not an unprimeable number, because it can be changed into a prime (6447745061) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5529216 + ... + 5530381.

It is an arithmetic number, because the mean of its divisors is an integer number (895827438).

Almost surely, 2^6447745051 is an apocalyptic number.

6447745051 is a deficient number, since it is larger than the sum of its proper divisors (718874453).

6447745051 is a wasteful number, since it uses less digits than its factorization.

6447745051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11059661.

The product of its (nonzero) digits is 470400, while the sum is 43.

The square root of 6447745051 is about 80297.8520945610. The cubic root of 6447745051 is about 1861.2410350860.

The spelling of 6447745051 in words is "six billion, four hundred forty-seven million, seven hundred forty-five thousand, fifty-one".