6444146135645 has 8 divisors (see below), whose sum is σ = 7982426181120. Its totient is φ = 4989016362960.

The previous prime is 6444146135599. The next prime is 6444146135671. The reversal of 6444146135645 is 5465316414446.

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

It is not a de Polignac number, because 6444146135645 - 2²⁰ = 6444145087069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20787568025 + ... + 20787568334.

It is an arithmetic number, because the mean of its divisors is an integer number (997803272640).

Almost surely, 2^{6444146135645} is an apocalyptic number.

It is an amenable number.

6444146135645 is a deficient number, since it is larger than the sum of its proper divisors (1538280045475).

6444146135645 is a wasteful number, since it uses less digits than its factorization.

6444146135645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41575136395.

The product of its digits is 16588800, while the sum is 53.

The spelling of 6444146135645 in words is "six trillion, four hundred forty-four billion, one hundred forty-six million, one hundred thirty-five thousand, six hundred forty-five".