120646643113 has 4 divisors (see below), whose sum is σ = 120855736660. Its totient is φ = 120437549568.

The previous prime is 120646643057. The next prime is 120646643123. The reversal of 120646643113 is 311346646021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 311346646021 = 8933 ⋅34853537.

It can be written as a sum of positive squares in 2 ways, for example, as 120411082009 + 235561104 = 347003^2 + 15348^2 .

It is a cyclic number.

It is not a de Polignac number, because 120646643113 - 2²¹ = 120644545961 is a prime.

It is a super-2 number, since 2×120646643113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120646643123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104545908 + ... + 104547061.

It is an arithmetic number, because the mean of its divisors is an integer number (30213934165).

Almost surely, 2^120646643113 is an apocalyptic number.

It is an amenable number.

120646643113 is a deficient number, since it is larger than the sum of its proper divisors (209093547).

120646643113 is an equidigital number, since it uses as much as digits as its factorization.

120646643113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209093546.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 120646643113 in words is "one hundred twenty billion, six hundred forty-six million, six hundred forty-three thousand, one hundred thirteen".