660115955712 has 224 divisors, whose sum is σ = 1914159313152. Its totient is φ = 201493315584.

The previous prime is 660115955689. The next prime is 660115955731. The reversal of 660115955712 is 217559511066.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15436953 + ... + 15479655.

Almost surely, 2^660115955712 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 660115955712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (957079656576).

660115955712 is an abundant number, since it is smaller than the sum of its proper divisors (1254043357440).

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

660115955712 is a wasteful number, since it uses less digits than its factorization.

660115955712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42786 (or 42762 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 48.

The spelling of 660115955712 in words is "six hundred sixty billion, one hundred fifteen million, nine hundred fifty-five thousand, seven hundred twelve".