2123161535 has 32 divisors (see below), whose sum is σ = 2953744704. Its totient is φ = 1447936000.

The previous prime is 2123161499. The next prime is 2123161549. The reversal of 2123161535 is 5351613212.

It is not a de Polignac number, because 2123161535 - 2¹⁴ = 2123145151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123161498 and 2123161507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258695 + ... + 266775.

It is an arithmetic number, because the mean of its divisors is an integer number (92304522).

Almost surely, 2^2123161535 is an apocalyptic number.

2123161535 is a deficient number, since it is larger than the sum of its proper divisors (830583169).

2123161535 is a wasteful number, since it uses less digits than its factorization.

2123161535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8395.

The product of its digits is 5400, while the sum is 29.

The square root of 2123161535 is about 46077.7770188624. Note that the first 3 decimals coincide. The cubic root of 2123161535 is about 1285.2699266915.

Adding to 2123161535 its reverse (5351613212), we get a palindrome (7474774747).

The spelling of 2123161535 in words is "two billion, one hundred twenty-three million, one hundred sixty-one thousand, five hundred thirty-five".