6662739509120 has 256 divisors, whose sum is σ = 16882227835200. Its totient is φ = 2507430297600.

The previous prime is 6662739509081. The next prime is 6662739509131. The reversal of 6662739509120 is 219059372666.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2071101752 + ... + 2071104968.

Almost surely, 2^{6662739509120} 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 6662739509120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8441113917600).

6662739509120 is an abundant number, since it is smaller than the sum of its proper divisors (10219488326080).

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

6662739509120 is a wasteful number, since it uses less digits than its factorization.

6662739509120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377 (or 4365 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 56.

The spelling of 6662739509120 in words is "six trillion, six hundred sixty-two billion, seven hundred thirty-nine million, five hundred nine thousand, one hundred twenty".