20106634354361 has 2 divisors, whose sum is σ = 20106634354362. Its totient is φ = 20106634354360.

The previous prime is 20106634354351. The next prime is 20106634354363. The reversal of 20106634354361 is 16345343660102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19682807313961 + 423827040400 = 4436531^2 + 651020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20106634354361 is a prime.

Together with 20106634354363, 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 (20106634354363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10053317177180 + 10053317177181.

It is an arithmetic number, because the mean of its divisors is an integer number (10053317177181).

Almost surely, 2^{20106634354361} is an apocalyptic number.

It is an amenable number.

20106634354361 is a deficient number, since it is larger than the sum of its proper divisors (1).

20106634354361 is an equidigital number, since it uses as much as digits as its factorization.

20106634354361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 44.

The spelling of 20106634354361 in words is "twenty trillion, one hundred six billion, six hundred thirty-four million, three hundred fifty-four thousand, three hundred sixty-one".