1662549912832 has 72 divisors (see below), whose sum is σ = 3527819168832. Its totient is φ = 779258880000.

The previous prime is 1662549912797. The next prime is 1662549912839. The reversal of 1662549912832 is 2382199452661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662549912839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331357 + ... + 1853347.

It is an arithmetic number, because the mean of its divisors is an integer number (48997488456).

Almost surely, 2^{1662549912832} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1662549912832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1763909584416).

1662549912832 is an abundant number, since it is smaller than the sum of its proper divisors (1865269256000).

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

1662549912832 is a wasteful number, since it uses less digits than its factorization.

1662549912832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522275 (or 1522261 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 58.

The spelling of 1662549912832 in words is "one trillion, six hundred sixty-two billion, five hundred forty-nine million, nine hundred twelve thousand, eight hundred thirty-two".