2003109161653 has 2 divisors, whose sum is σ = 2003109161654. Its totient is φ = 2003109161652.

The previous prime is 2003109161623. The next prime is 2003109161681. The reversal of 2003109161653 is 3561619013002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2000281261969 + 2827899684 = 1414313^2 + 53178^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003109161653 - 2⁵ = 2003109161621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2003109161623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001554580826 + 1001554580827.

It is an arithmetic number, because the mean of its divisors is an integer number (1001554580827).

Almost surely, 2^{2003109161653} is an apocalyptic number.

It is an amenable number.

2003109161653 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003109161653 is an equidigital number, since it uses as much as digits as its factorization.

2003109161653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 37.

The spelling of 2003109161653 in words is "two trillion, three billion, one hundred nine million, one hundred sixty-one thousand, six hundred fifty-three".