2101782609371 has 2 divisors, whose sum is σ = 2101782609372. Its totient is φ = 2101782609370.

The previous prime is 2101782609361. The next prime is 2101782609379. The reversal of 2101782609371 is 1739062871012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2101782609371 - 2³⁰ = 2100708867547 is a prime.

It is not a weakly prime, because it can be changed into another prime (2101782609379) by changing a digit.

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 as a sum of consecutive naturals, namely, 1050891304685 + 1050891304686.

It is an arithmetic number, because the mean of its divisors is an integer number (1050891304686).

Almost surely, 2^{2101782609371} is an apocalyptic number.

2101782609371 is a deficient number, since it is larger than the sum of its proper divisors (1).

2101782609371 is an equidigital number, since it uses as much as digits as its factorization.

2101782609371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 47.

The spelling of 2101782609371 in words is "two trillion, one hundred one billion, seven hundred eighty-two million, six hundred nine thousand, three hundred seventy-one".