6661312060512 has 48 divisors (see below), whose sum is σ = 17725477659120. Its totient is φ = 2190020401152.

The previous prime is 6661312060493. The next prime is 6661312060553. The reversal of 6661312060512 is 2150602131666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475257837 + ... + 475271852.

It is an arithmetic number, because the mean of its divisors is an integer number (369280784565).

Almost surely, 2^{6661312060512} is an apocalyptic number.

It is an amenable number.

6661312060512 is an abundant number, since it is smaller than the sum of its proper divisors (11064165598608).

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

6661312060512 is a wasteful number, since it uses less digits than its factorization.

6661312060512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950529775 (or 950529767 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 6661312060512 in words is "six trillion, six hundred sixty-one billion, three hundred twelve million, sixty thousand, five hundred twelve".