1660655001983 has 8 divisors (see below), whose sum is σ = 1722348811776. Its totient is φ = 1599468960600.

The previous prime is 1660655001913. The next prime is 1660655002129. The reversal of 1660655001983 is 3891005560661.

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 1660655001983 - 2¹⁴ = 1660654985599 is a prime.

It is a super-2 number, since 2×1660655001983² (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 (1660655001913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126935441 + ... + 126948522.

It is an arithmetic number, because the mean of its divisors is an integer number (215293601472).

Almost surely, 2^{1660655001983} is an apocalyptic number.

1660655001983 is a deficient number, since it is larger than the sum of its proper divisors (61693809793).

1660655001983 is a wasteful number, since it uses less digits than its factorization.

1660655001983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253884205.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 1660655001983 in words is "one trillion, six hundred sixty billion, six hundred fifty-five million, one thousand, nine hundred eighty-three".