6691348391040 has 384 divisors, whose sum is σ = 23659040433600. Its totient is φ = 1741710974976.

The previous prime is 6691348391029. The next prime is 6691348391099. The reversal of 6691348391040 is 401938431966.

6691348391040 is a `hidden beast` number, since 6 + 69 + 13 + 483 + 91 + 0 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 413369827 + ... + 413386013.

Almost surely, 2^{6691348391040} is an apocalyptic number.

6691348391040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6691348391040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11829520216800).

6691348391040 is an abundant number, since it is smaller than the sum of its proper divisors (16967692042560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6691348391040 is a wasteful number, since it uses less digits than its factorization.

6691348391040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17924 (or 17909 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The spelling of 6691348391040 in words is "six trillion, six hundred ninety-one billion, three hundred forty-eight million, three hundred ninety-one thousand, forty".