6401451667 has 8 divisors (see below), whose sum is σ = 7054194224. Its totient is φ = 5771612448.

The previous prime is 6401451631. The next prime is 6401451689. The reversal of 6401451667 is 7661541046.

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 6401451667 - 2²⁷ = 6267233939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6401451697) 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 7 ways as a sum of consecutive naturals, for example, 5725248 + ... + 5726365.

It is an arithmetic number, because the mean of its divisors is an integer number (881774278).

Almost surely, 2^6401451667 is an apocalyptic number.

6401451667 is a deficient number, since it is larger than the sum of its proper divisors (652742557).

6401451667 is a wasteful number, since it uses less digits than its factorization.

6401451667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11451669.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 6401451667 is about 80009.0724043217. The cubic root of 6401451667 is about 1856.7758986942.

The spelling of 6401451667 in words is "six billion, four hundred one million, four hundred fifty-one thousand, six hundred sixty-seven".