1100660556161 has 16 divisors (see below), whose sum is σ = 1141884615168. Its totient is φ = 1059805084800.

The previous prime is 1100660556139. The next prime is 1100660556173. The reversal of 1100660556161 is 1616550660011.

It is not a de Polignac number, because 1100660556161 - 2³⁸ = 825782649217 is a prime.

It is a super-2 number, since 2×1100660556161² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100660556131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5857115 + ... + 6042111.

It is an arithmetic number, because the mean of its divisors is an integer number (71367788448).

Almost surely, 2^{1100660556161} is an apocalyptic number.

It is an amenable number.

1100660556161 is a deficient number, since it is larger than the sum of its proper divisors (41224059007).

1100660556161 is a wasteful number, since it uses less digits than its factorization.

1100660556161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185992.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 1100660556161 in words is "one trillion, one hundred billion, six hundred sixty million, five hundred fifty-six thousand, one hundred sixty-one".