123046643161 has 16 divisors (see below), whose sum is σ = 140343709968. Its totient is φ = 106871961600.

The previous prime is 123046643149. The next prime is 123046643171. The reversal of 123046643161 is 161346640321.

It can be written as a sum of positive squares in 8 ways, for example, as 4641833161 + 118404810000 = 68131^2 + 344100^2 .

It is a cyclic number.

It is not a de Polignac number, because 123046643161 - 2¹³ = 123046634969 is a prime.

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 123046643161.

It is not an unprimeable number, because it can be changed into a prime (123046643171) 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 15 ways as a sum of consecutive naturals, for example, 785971 + ... + 929431.

It is an arithmetic number, because the mean of its divisors is an integer number (8771481873).

Almost surely, 2^123046643161 is an apocalyptic number.

It is an amenable number.

123046643161 is a deficient number, since it is larger than the sum of its proper divisors (17297066807).

123046643161 is a wasteful number, since it uses less digits than its factorization.

123046643161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147372.

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

The spelling of 123046643161 in words is "one hundred twenty-three billion, forty-six million, six hundred forty-three thousand, one hundred sixty-one".