1664165932417 has 8 divisors (see below), whose sum is σ = 1669944794336. Its totient is φ = 1658392045632.

The previous prime is 1664165932409. The next prime is 1664165932519. The reversal of 1664165932417 is 7142395614661.

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 1664165932417 - 2³ = 1664165932409 is a prime.

It is a super-2 number, since 2×1664165932417² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1664165932817) 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, 573003 + ... + 1912240.

It is an arithmetic number, because the mean of its divisors is an integer number (208743099292).

Almost surely, 2^{1664165932417} is an apocalyptic number.

It is an amenable number.

1664165932417 is a deficient number, since it is larger than the sum of its proper divisors (5778861919).

1664165932417 is a wasteful number, since it uses less digits than its factorization.

1664165932417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487567.

The product of its digits is 6531840, while the sum is 55.

The spelling of 1664165932417 in words is "one trillion, six hundred sixty-four billion, one hundred sixty-five million, nine hundred thirty-two thousand, four hundred seventeen".