660157228144 has 10 divisors (see below), whose sum is σ = 1279054629560. Its totient is φ = 330078614064.

The previous prime is 660157228103. The next prime is 660157228151. The reversal of 660157228144 is 441822751066.

It is a junction number, because it is equal to n+sod(n) for n = 660157228094 and 660157228103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20629913364 + ... + 20629913395.

It is an arithmetic number, because the mean of its divisors is an integer number (127905462956).

Almost surely, 2^660157228144 is an apocalyptic number.

It is an amenable number.

660157228144 is a deficient number, since it is larger than the sum of its proper divisors (618897401416).

660157228144 is a wasteful number, since it uses less digits than its factorization.

660157228144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41259826767 (or 41259826761 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 660157228144 in words is "six hundred sixty billion, one hundred fifty-seven million, two hundred twenty-eight thousand, one hundred forty-four".