2113646020361 has 2 divisors, whose sum is σ = 2113646020362. Its totient is φ = 2113646020360.

The previous prime is 2113646020351. The next prime is 2113646020363. The reversal of 2113646020361 is 1630206463112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1612948260361 + 500697760000 = 1270019^2 + 707600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113646020361 is a prime.

Together with 2113646020363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2113646020363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056823010180 + 1056823010181.

It is an arithmetic number, because the mean of its divisors is an integer number (1056823010181).

Almost surely, 2^{2113646020361} is an apocalyptic number.

It is an amenable number.

2113646020361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113646020361 is an equidigital number, since it uses as much as digits as its factorization.

2113646020361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 2113646020361 in words is "two trillion, one hundred thirteen billion, six hundred forty-six million, twenty thousand, three hundred sixty-one".