120366664561 has 96 divisors (see below), whose sum is σ = 158441472000. Its totient is φ = 89996313600.

The previous prime is 120366664519. The next prime is 120366664567. The reversal of 120366664561 is 165466663021.

It is a happy number.

It is not a de Polignac number, because 120366664561 - 2⁷ = 120366664433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120366664567) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 60212440 + ... + 60214438.

It is an arithmetic number, because the mean of its divisors is an integer number (1650432000).

Almost surely, 2^120366664561 is an apocalyptic number.

120366664561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120366664561 is a deficient number, since it is larger than the sum of its proper divisors (38074807439).

120366664561 is a wasteful number, since it uses less digits than its factorization.

120366664561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135 (or 2118 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 120366664561 in words is "one hundred twenty billion, three hundred sixty-six million, six hundred sixty-four thousand, five hundred sixty-one".