2161353503 has 2 divisors, whose sum is σ = 2161353504. Its totient is φ = 2161353502.

The previous prime is 2161353473. The next prime is 2161353521. The reversal of 2161353503 is 3053531612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2161353503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2161353533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080676751 + 1080676752.

It is an arithmetic number, because the mean of its divisors is an integer number (1080676752).

Almost surely, 2^2161353503 is an apocalyptic number.

2161353503 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161353503 is an equidigital number, since it uses as much as digits as its factorization.

2161353503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 2161353503 is about 46490.3592479129. The cubic root of 2161353503 is about 1292.9307607733.

The spelling of 2161353503 in words is "two billion, one hundred sixty-one million, three hundred fifty-three thousand, five hundred three".