6649919740005 has 48 divisors (see below), whose sum is σ = 10922443395072. Its totient is φ = 3453938208000.

The previous prime is 6649919740003. The next prime is 6649919740069. The reversal of 6649919740005 is 5000479199466.

It is not a de Polignac number, because 6649919740005 - 2¹ = 6649919740003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6649919740001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8977692 + ... + 9690138.

It is an arithmetic number, because the mean of its divisors is an integer number (227550904064).

Almost surely, 2^{6649919740005} is an apocalyptic number.

It is an amenable number.

6649919740005 is a deficient number, since it is larger than the sum of its proper divisors (4272523655067).

6649919740005 is a wasteful number, since it uses less digits than its factorization.

6649919740005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712718 (or 712617 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 60.

The spelling of 6649919740005 in words is "six trillion, six hundred forty-nine billion, nine hundred nineteen million, seven hundred forty thousand, five".