660161161144 has 16 divisors (see below), whose sum is σ = 1264138394400. Its totient is φ = 323057589312.

The previous prime is 660161161123. The next prime is 660161161151. The reversal of 660161161144 is 441161161066.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877873509 + ... + 877874260.

It is an arithmetic number, because the mean of its divisors is an integer number (79008649650).

Almost surely, 2^660161161144 is an apocalyptic number.

It is an amenable number.

660161161144 is a deficient number, since it is larger than the sum of its proper divisors (603977233256).

660161161144 is a wasteful number, since it uses less digits than its factorization.

660161161144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755747822 (or 1755747818 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 660161161144 in words is "six hundred sixty billion, one hundred sixty-one million, one hundred sixty-one thousand, one hundred forty-four".