1664920529359 has 8 divisors (see below), whose sum is σ = 1762883703648. Its totient is φ = 1566960318720.

The previous prime is 1664920529287. The next prime is 1664920529407. The reversal of 1664920529359 is 9539250294661.

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 1664920529359 - 2¹⁷ = 1664920398287 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1664920529297 and 1664920529306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664920523359) 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, 472494 + ... + 1884964.

It is an arithmetic number, because the mean of its divisors is an integer number (220360462956).

Almost surely, 2^{1664920529359} is an apocalyptic number.

1664920529359 is a deficient number, since it is larger than the sum of its proper divisors (97963174289).

1664920529359 is a wasteful number, since it uses less digits than its factorization.

1664920529359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481825.

The product of its (nonzero) digits is 31492800, while the sum is 61.

The spelling of 1664920529359 in words is "one trillion, six hundred sixty-four billion, nine hundred twenty million, five hundred twenty-nine thousand, three hundred fifty-nine".