653660123660 has 24 divisors (see below), whose sum is σ = 1372702143120. Its totient is φ = 261461024064.

The previous prime is 653660123651. The next prime is 653660123681. The reversal of 653660123660 is 66321066356.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2551127 + ... + 2795633.

It is an arithmetic number, because the mean of its divisors is an integer number (57195922630).

Almost surely, 2^653660123660 is an apocalyptic number.

It is an amenable number.

653660123660 is an abundant number, since it is smaller than the sum of its proper divisors (719042019460).

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

653660123660 is a wasteful number, since it uses less digits than its factorization.

653660123660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378185 (or 378183 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 44.

The spelling of 653660123660 in words is "six hundred fifty-three billion, six hundred sixty million, one hundred twenty-three thousand, six hundred sixty".