1667120544752 has 80 divisors (see below), whose sum is σ = 3500284925760. Its totient is φ = 769178412288.

The previous prime is 1667120544743. The next prime is 1667120544757. The reversal of 1667120544752 is 2574450217661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1667120544752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1667120544757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135786038 + ... + 135798314.

It is an arithmetic number, because the mean of its divisors is an integer number (43753561572).

Almost surely, 2^{1667120544752} 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 1667120544752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1750142462880).

1667120544752 is an abundant number, since it is smaller than the sum of its proper divisors (1833164381008).

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

1667120544752 is a wasteful number, since it uses less digits than its factorization.

1667120544752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16187 (or 16155 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 50.

The spelling of 1667120544752 in words is "one trillion, six hundred sixty-seven billion, one hundred twenty million, five hundred forty-four thousand, seven hundred fifty-two".