120646643735 has 4 divisors (see below), whose sum is σ = 144775972488. Its totient is φ = 96517314984.

The previous prime is 120646643723. The next prime is 120646643753. The reversal of 120646643735 is 537346646021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120646643735 - 2⁶ = 120646643671 is a prime.

It is a super-2 number, since 2×120646643735² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120646643735.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12064664369 + ... + 12064664378.

It is an arithmetic number, because the mean of its divisors is an integer number (36193993122).

Almost surely, 2^120646643735 is an apocalyptic number.

120646643735 is a deficient number, since it is larger than the sum of its proper divisors (24129328753).

120646643735 is an equidigital number, since it uses as much as digits as its factorization.

120646643735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24129328752.

The product of its (nonzero) digits is 2177280, while the sum is 47.

The spelling of 120646643735 in words is "one hundred twenty billion, six hundred forty-six million, six hundred forty-three thousand, seven hundred thirty-five".