660135245244 has 48 divisors (see below), whose sum is σ = 1621638238080. Its totient is φ = 208431178560.

The previous prime is 660135245243. The next prime is 660135245267. The reversal of 660135245244 is 442542531066.

It is a happy number.

660135245244 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 660135245196 and 660135245205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660135245243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1256922 + ... + 1702974.

It is an arithmetic number, because the mean of its divisors is an integer number (33784129960).

Almost surely, 2^660135245244 is an apocalyptic number.

It is an amenable number.

660135245244 is an abundant number, since it is smaller than the sum of its proper divisors (961502992836).

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

660135245244 is a wasteful number, since it uses less digits than its factorization.

660135245244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452570 (or 452568 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 660135245244 in words is "six hundred sixty billion, one hundred thirty-five million, two hundred forty-five thousand, two hundred forty-four".