20267200275691 has 2 divisors, whose sum is σ = 20267200275692. Its totient is φ = 20267200275690.

The previous prime is 20267200275689. The next prime is 20267200275719. The reversal of 20267200275691 is 19657200276202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20267200275691 - 2¹ = 20267200275689 is a prime.

Together with 20267200275689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20267200275601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10133600137845 + 10133600137846.

It is an arithmetic number, because the mean of its divisors is an integer number (10133600137846).

Almost surely, 2^{20267200275691} is an apocalyptic number.

20267200275691 is a deficient number, since it is larger than the sum of its proper divisors (1).

20267200275691 is an equidigital number, since it uses as much as digits as its factorization.

20267200275691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 20267200275691 in words is "twenty trillion, two hundred sixty-seven billion, two hundred million, two hundred seventy-five thousand, six hundred ninety-one".