6649758909117 has 48 divisors (see below), whose sum is σ = 9996446187520. Its totient is φ = 4254971212800.

The previous prime is 6649758909103. The next prime is 6649758909149. The reversal of 6649758909117 is 7119098579466.

It is not a de Polignac number, because 6649758909117 - 2¹² = 6649758905021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6649750909117) 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, 112257567 + ... + 112316787.

Almost surely, 2^{6649758909117} is an apocalyptic number.

It is an amenable number.

6649758909117 is a deficient number, since it is larger than the sum of its proper divisors (3346687278403).

6649758909117 is a wasteful number, since it uses less digits than its factorization.

6649758909117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62554 (or 62551 counting only the distinct ones).

The product of its (nonzero) digits is 205752960, while the sum is 72.

The spelling of 6649758909117 in words is "six trillion, six hundred forty-nine billion, seven hundred fifty-eight million, nine hundred nine thousand, one hundred seventeen".