1660804393283 has 32 divisors (see below), whose sum is σ = 1934151478272. Its totient is φ = 1396681574400.

The previous prime is 1660804393253. The next prime is 1660804393331. The reversal of 1660804393283 is 3823934080661.

It is a happy number.

It is a Cunningham number, because it is equal to 1288722²-1.

It is not a de Polignac number, because 1660804393283 - 2⁶ = 1660804393219 is a prime.

It is a super-2 number, since 2×1660804393283² (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 (1660804393253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 300269228 + ... + 300274758.

It is an arithmetic number, because the mean of its divisors is an integer number (60442233696).

Almost surely, 2^{1660804393283} is an apocalyptic number.

1660804393283 is a deficient number, since it is larger than the sum of its proper divisors (273347084989).

1660804393283 is a wasteful number, since it uses less digits than its factorization.

1660804393283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8435.

The product of its (nonzero) digits is 4478976, while the sum is 53.

The spelling of 1660804393283 in words is "one trillion, six hundred sixty billion, eight hundred four million, three hundred ninety-three thousand, two hundred eighty-three".