6661134420252 has 48 divisors (see below), whose sum is σ = 16754191994400. Its totient is φ = 2047625929728.

The previous prime is 6661134420251. The next prime is 6661134420277. The reversal of 6661134420252 is 2520244311666.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661134420251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20188873 + ... + 20516160.

It is an arithmetic number, because the mean of its divisors is an integer number (349045666550).

Almost surely, 2^{6661134420252} is an apocalyptic number.

It is an amenable number.

6661134420252 is an abundant number, since it is smaller than the sum of its proper divisors (10093057574148).

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

6661134420252 is a wasteful number, since it uses less digits than its factorization.

6661134420252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40706102 (or 40706100 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 6661134420252 in words is "six trillion, six hundred sixty-one billion, one hundred thirty-four million, four hundred twenty thousand, two hundred fifty-two".