6660051652020 has 96 divisors (see below), whose sum is σ = 20549655004032. Its totient is φ = 1601271802368.

The previous prime is 6660051651997. The next prime is 6660051652031. The reversal of 6660051652020 is 202561500666.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 6660051652020.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 99251667 + ... + 99318746.

It is an arithmetic number, because the mean of its divisors is an integer number (214058906292).

Almost surely, 2^{6660051652020} is an apocalyptic number.

6660051652020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6660051652020 is an abundant number, since it is smaller than the sum of its proper divisors (13889603352012).

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

6660051652020 is a wasteful number, since it uses less digits than its factorization.

6660051652020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198570481 (or 198570479 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 6660051652020 in words is "six trillion, six hundred sixty billion, fifty-one million, six hundred fifty-two thousand, twenty".