20267280811 has 2 divisors, whose sum is σ = 20267280812. Its totient is φ = 20267280810.

The previous prime is 20267280809. The next prime is 20267280923. The reversal of 20267280811 is 11808276202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20267280811 - 2¹ = 20267280809 is a prime.

Together with 20267280809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20267280311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10133640405 + 10133640406.

It is an arithmetic number, because the mean of its divisors is an integer number (10133640406).

Almost surely, 2^20267280811 is an apocalyptic number.

20267280811 is a deficient number, since it is larger than the sum of its proper divisors (1).

20267280811 is an equidigital number, since it uses as much as digits as its factorization.

20267280811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 37.

The spelling of 20267280811 in words is "twenty billion, two hundred sixty-seven million, two hundred eighty thousand, eight hundred eleven".