1664365117231 has 8 divisors (see below), whose sum is σ = 1703146593104. Its totient is φ = 1625587064640.

The previous prime is 1664365117187. The next prime is 1664365117243. The reversal of 1664365117231 is 1327115634661.

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 1664365117231 - 2³³ = 1655775182639 is a prime.

It is a super-2 number, since 2×1664365117231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664365117291) 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, 141265 + ... + 1829941.

It is an arithmetic number, because the mean of its divisors is an integer number (212893324138).

Almost surely, 2^{1664365117231} is an apocalyptic number.

1664365117231 is a deficient number, since it is larger than the sum of its proper divisors (38781475873).

1664365117231 is a wasteful number, since it uses less digits than its factorization.

1664365117231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711641.

The product of its digits is 544320, while the sum is 46.

The spelling of 1664365117231 in words is "one trillion, six hundred sixty-four billion, three hundred sixty-five million, one hundred seventeen thousand, two hundred thirty-one".