660940155244 has 24 divisors (see below), whose sum is σ = 1198390581360. Its totient is φ = 318578293824.

The previous prime is 660940155223. The next prime is 660940155277. The reversal of 660940155244 is 442551049066.

660940155244 is digitally balanced in base 2, because in such base 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 = 660940155194 and 660940155203.

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, 4356019 + ... + 4505194.

It is an arithmetic number, because the mean of its divisors is an integer number (49932940890).

Almost surely, 2^660940155244 is an apocalyptic number.

It is an amenable number.

660940155244 is a deficient number, since it is larger than the sum of its proper divisors (537450426116).

660940155244 is a wasteful number, since it uses less digits than its factorization.

660940155244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8861889 (or 8861887 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 46.

The spelling of 660940155244 in words is "six hundred sixty billion, nine hundred forty million, one hundred fifty-five thousand, two hundred forty-four".