1660353352556 has 12 divisors (see below), whose sum is σ = 3076537094568. Its totient is φ = 781342754112.

The previous prime is 1660353352513. The next prime is 1660353352571. The reversal of 1660353352556 is 6552533530661.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12208480466 + ... + 12208480601.

It is an arithmetic number, because the mean of its divisors is an integer number (256378091214).

Almost surely, 2^{1660353352556} is an apocalyptic number.

It is an amenable number.

1660353352556 is a deficient number, since it is larger than the sum of its proper divisors (1416183742012).

1660353352556 is a wasteful number, since it uses less digits than its factorization.

1660353352556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24416961088 (or 24416961086 counting only the distinct ones).

The product of its (nonzero) digits is 7290000, while the sum is 50.

The spelling of 1660353352556 in words is "one trillion, six hundred sixty billion, three hundred fifty-three million, three hundred fifty-two thousand, five hundred fifty-six".