1688117693339 has 8 divisors (see below), whose sum is σ = 2104666215168. Its totient is φ = 1315416384360.

The previous prime is 1688117693279. The next prime is 1688117693389. The reversal of 1688117693339 is 9333967118861.

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 1688117693339 - 2¹² = 1688117689243 is a prime.

It is a super-3 number, since 3×1688117693339³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1688117693389) 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, 10961803127 + ... + 10961803280.

It is an arithmetic number, because the mean of its divisors is an integer number (263083276896).

Almost surely, 2^{1688117693339} is an apocalyptic number.

1688117693339 is a deficient number, since it is larger than the sum of its proper divisors (416548521829).

1688117693339 is a wasteful number, since it uses less digits than its factorization.

1688117693339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21923606425.

The product of its digits is 35271936, while the sum is 65.

The spelling of 1688117693339 in words is "one trillion, six hundred eighty-eight billion, one hundred seventeen million, six hundred ninety-three thousand, three hundred thirty-nine".