1660101120 has 120 divisors (see below), whose sum is σ = 5749476876. Its totient is φ = 442687488.

The previous prime is 1660101071. The next prime is 1660101127. The reversal of 1660101120 is 211010661.

1660101120 is a `hidden beast` number, since 1 + 660 + 1 + 0 + 1 + 1 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1507924224 + 152176896 = 38832^2 + 12336^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1660101093 and 1660101102.

It is not an unprimeable number, because it can be changed into a prime (1660101127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12987 + ... + 59066.

Almost surely, 2^1660101120 is an apocalyptic number.

1660101120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1660101120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2874738438).

1660101120 is an abundant number, since it is smaller than the sum of its proper divisors (4089375756).

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

1660101120 is an equidigital number, since it uses as much as digits as its factorization.

1660101120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72082 (or 72063 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1660101120 is about 40744.3385024226. The cubic root of 1660101120 is about 1184.0721894139.

Adding to 1660101120 its reverse (211010661), we get a palindrome (1871111781).

The spelling of 1660101120 in words is "one billion, six hundred sixty million, one hundred one thousand, one hundred twenty".