6691205162890 has 16 divisors (see below), whose sum is σ = 12047178151008. Its totient is φ = 2675813430096.

The previous prime is 6691205162879. The next prime is 6691205162903. The reversal of 6691205162890 is 982615021966.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83537352 + ... + 83617411.

It is an arithmetic number, because the mean of its divisors is an integer number (752948634438).

Almost surely, 2^{6691205162890} is an apocalyptic number.

6691205162890 is a deficient number, since it is larger than the sum of its proper divisors (5355972988118).

6691205162890 is a wasteful number, since it uses less digits than its factorization.

6691205162890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167158773.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 6691205162890 in words is "six trillion, six hundred ninety-one billion, two hundred five million, one hundred sixty-two thousand, eight hundred ninety".