6600694412566 has 16 divisors (see below), whose sum is σ = 9918481317840. Its totient is φ = 3294534297600.

The previous prime is 6600694412519. The next prime is 6600694412573. The reversal of 6600694412566 is 6652144960066.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60390766 + ... + 60499966.

It is an arithmetic number, because the mean of its divisors is an integer number (619905082365).

Almost surely, 2^{6600694412566} is an apocalyptic number.

6600694412566 is a deficient number, since it is larger than the sum of its proper divisors (3317786905274).

6600694412566 is a wasteful number, since it uses less digits than its factorization.

6600694412566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162159.

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 6600694412566 in words is "six trillion, six hundred billion, six hundred ninety-four million, four hundred twelve thousand, five hundred sixty-six".