1665980582631 has 8 divisors (see below), whose sum is σ = 2221464560640. Its totient is φ = 1110575163192.

The previous prime is 1665980582521. The next prime is 1665980582653. The reversal of 1665980582631 is 1362850895661.

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

It is not a de Polignac number, because 1665980582631 - 2¹⁴ = 1665980566247 is a prime.

It is a super-2 number, since 2×1665980582631² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1665980582681) 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, 19590141 + ... + 19674998.

It is an arithmetic number, because the mean of its divisors is an integer number (277683070080).

Almost surely, 2^{1665980582631} is an apocalyptic number.

1665980582631 is a deficient number, since it is larger than the sum of its proper divisors (555483978009).

1665980582631 is a wasteful number, since it uses less digits than its factorization.

1665980582631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39279285.

The product of its (nonzero) digits is 18662400, while the sum is 60.

The spelling of 1665980582631 in words is "one trillion, six hundred sixty-five billion, nine hundred eighty million, five hundred eighty-two thousand, six hundred thirty-one".