6688400746241 has 8 divisors (see below), whose sum is σ = 6707178968064. Its totient is φ = 6669629374320.

The previous prime is 6688400746231. The next prime is 6688400746259. The reversal of 6688400746241 is 1426470048866.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6688400746241 - 2⁶ = 6688400746177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6688400746201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246251 + ... + 3665711.

It is an arithmetic number, because the mean of its divisors is an integer number (838397371008).

Almost surely, 2^{6688400746241} is an apocalyptic number.

It is an amenable number.

6688400746241 is a deficient number, since it is larger than the sum of its proper divisors (18778221823).

6688400746241 is a wasteful number, since it uses less digits than its factorization.

6688400746241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424951.

The product of its (nonzero) digits is 12386304, while the sum is 56.

The spelling of 6688400746241 in words is "six trillion, six hundred eighty-eight billion, four hundred million, seven hundred forty-six thousand, two hundred forty-one".