2108381944433 has 2 divisors, whose sum is σ = 2108381944434. Its totient is φ = 2108381944432.

The previous prime is 2108381944367. The next prime is 2108381944453. The reversal of 2108381944433 is 3344491838012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1743054781504 + 365327162929 = 1320248^2 + 604423^2 .

It is a cyclic number.

It is not a de Polignac number, because 2108381944433 - 2⁸ = 2108381944177 is a prime.

It is a super-2 number, since 2×2108381944433² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2108381944453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054190972216 + 1054190972217.

It is an arithmetic number, because the mean of its divisors is an integer number (1054190972217).

Almost surely, 2^{2108381944433} is an apocalyptic number.

It is an amenable number.

2108381944433 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108381944433 is an equidigital number, since it uses as much as digits as its factorization.

2108381944433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 2108381944433 in words is "two trillion, one hundred eight billion, three hundred eighty-one million, nine hundred forty-four thousand, four hundred thirty-three".