6649452719999 has 16 divisors (see below), whose sum is σ = 7054119810720. Its totient is φ = 6246294082560.

The previous prime is 6649452719983. The next prime is 6649452720041. The reversal of 6649452719999 is 9999172549466.

It is not a de Polignac number, because 6649452719999 - 2⁴ = 6649452719983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6649452719939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36685304 + ... + 36866114.

It is an arithmetic number, because the mean of its divisors is an integer number (440882488170).

Almost surely, 2^{6649452719999} is an apocalyptic number.

6649452719999 is a deficient number, since it is larger than the sum of its proper divisors (404667090721).

6649452719999 is a wasteful number, since it uses less digits than its factorization.

6649452719999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184970.

The product of its digits is 2380855680, while the sum is 80.

The spelling of 6649452719999 in words is "six trillion, six hundred forty-nine billion, four hundred fifty-two million, seven hundred nineteen thousand, nine hundred ninety-nine".