1662085141872 has 80 divisors (see below), whose sum is σ = 4367815263360. Its totient is φ = 544473376000.

The previous prime is 1662085141799. The next prime is 1662085141903. The reversal of 1662085141872 is 2781415802661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9459622 + ... + 9633722.

It is an arithmetic number, because the mean of its divisors is an integer number (54597690792).

Almost surely, 2^{1662085141872} is an apocalyptic number.

1662085141872 is a gapful number since it is divisible by the number (12) 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 1662085141872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2183907631680).

1662085141872 is an abundant number, since it is smaller than the sum of its proper divisors (2705730121488).

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

1662085141872 is a wasteful number, since it uses less digits than its factorization.

1662085141872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177542 (or 177536 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 1662085141872 in words is "one trillion, six hundred sixty-two billion, eighty-five million, one hundred forty-one thousand, eight hundred seventy-two".