6607993406399 has 16 divisors (see below), whose sum is σ = 8242068764160. Its totient is φ = 5146878564960.

The previous prime is 6607993406303. The next prime is 6607993406401. The reversal of 6607993406399 is 9936043997066.

It is a de Polignac number, because none of the positive numbers 2^k-6607993406399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6607993406999) 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, 18212579 + ... + 18571860.

It is an arithmetic number, because the mean of its divisors is an integer number (515129297760).

Almost surely, 2^{6607993406399} is an apocalyptic number.

6607993406399 is a deficient number, since it is larger than the sum of its proper divisors (1634075357761).

6607993406399 is a wasteful number, since it uses less digits than its factorization.

6607993406399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36786790.

The product of its (nonzero) digits is 357128352, while the sum is 71.

The spelling of 6607993406399 in words is "six trillion, six hundred seven billion, nine hundred ninety-three million, four hundred six thousand, three hundred ninety-nine".