1691179382797 has 8 divisors (see below), whose sum is σ = 1718926426112. Its totient is φ = 1663433074800.

The previous prime is 1691179382779. The next prime is 1691179382813. The reversal of 1691179382797 is 7972839711961.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1691179382797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1691179382777) by changing a digit.

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, 6333172 + ... + 6594802.

It is an arithmetic number, because the mean of its divisors is an integer number (214865803264).

Almost surely, 2^{1691179382797} is an apocalyptic number.

It is an amenable number.

1691179382797 is a deficient number, since it is larger than the sum of its proper divisors (27747043315).

1691179382797 is a wasteful number, since it uses less digits than its factorization.

1691179382797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367659.

The product of its digits is 72013536, while the sum is 70.

The spelling of 1691179382797 in words is "one trillion, six hundred ninety-one billion, one hundred seventy-nine million, three hundred eighty-two thousand, seven hundred ninety-seven".