120645132385 has 4 divisors (see below), whose sum is σ = 144774158868. Its totient is φ = 96516105904.

The previous prime is 120645132373. The next prime is 120645132389. The reversal of 120645132385 is 583231546021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583231546021 = 19 ⋅30696397159.

It can be written as a sum of positive squares in 2 ways, for example, as 30850814736 + 89794317649 = 175644^2 + 299657^2 .

It is a cyclic number.

It is not a de Polignac number, because 120645132385 - 2¹¹ = 120645130337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120645132389) 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 3 ways as a sum of consecutive naturals, for example, 12064513234 + ... + 12064513243.

It is an arithmetic number, because the mean of its divisors is an integer number (36193539717).

Almost surely, 2^120645132385 is an apocalyptic number.

It is an amenable number.

120645132385 is a deficient number, since it is larger than the sum of its proper divisors (24129026483).

120645132385 is an equidigital number, since it uses as much as digits as its factorization.

120645132385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24129026482.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 120645132385 in words is "one hundred twenty billion, six hundred forty-five million, one hundred thirty-two thousand, three hundred eighty-five".