1660211104216 has 16 divisors (see below), whose sum is σ = 3557595223440. Its totient is φ = 711519044640.

The previous prime is 1660211104213. The next prime is 1660211104231. The reversal of 1660211104216 is 6124011120661.

It is a super-2 number, since 2×1660211104216² (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 (1660211104213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14823313375 + ... + 14823313486.

It is an arithmetic number, because the mean of its divisors is an integer number (222349701465).

Almost surely, 2^{1660211104216} is an apocalyptic number.

It is an amenable number.

1660211104216 is an abundant number, since it is smaller than the sum of its proper divisors (1897384119224).

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

1660211104216 is a wasteful number, since it uses less digits than its factorization.

1660211104216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29646626874 (or 29646626870 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

Adding to 1660211104216 its reverse (6124011120661), we get a palindrome (7784222224877).

The spelling of 1660211104216 in words is "one trillion, six hundred sixty billion, two hundred eleven million, one hundred four thousand, two hundred sixteen".