1660650660160 has 56 divisors (see below), whose sum is σ = 3954895388136. Its totient is φ = 664181145600.

The previous prime is 1660650660127. The next prime is 1660650660173. The reversal of 1660650660160 is 610660560661.

It can be written as a sum of positive squares in 4 ways, for example, as 700046809344 + 960603850816 = 836688^2 + 980104^2 .

It is a super-2 number, since 2×1660650660160² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2419360 + ... + 3028960.

It is an arithmetic number, because the mean of its divisors is an integer number (70623131931).

Almost surely, 2^{1660650660160} is an apocalyptic number.

1660650660160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1660650660160 is an abundant number, since it is smaller than the sum of its proper divisors (2294244727976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1660650660160 is an equidigital number, since it uses as much as digits as its factorization.

1660650660160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618131 (or 618121 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 1660650660160 in words is "one trillion, six hundred sixty billion, six hundred fifty million, six hundred sixty thousand, one hundred sixty".