21086762273903 has 2 divisors, whose sum is σ = 21086762273904. Its totient is φ = 21086762273902.

The previous prime is 21086762273891. The next prime is 21086762273947. The reversal of 21086762273903 is 30937226768012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21086762273903 - 2²² = 21086758079599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21086762273953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10543381136951 + 10543381136952.

It is an arithmetic number, because the mean of its divisors is an integer number (10543381136952).

Almost surely, 2^{21086762273903} is an apocalyptic number.

21086762273903 is a deficient number, since it is larger than the sum of its proper divisors (1).

21086762273903 is an equidigital number, since it uses as much as digits as its factorization.

21086762273903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 21086762273903 in words is "twenty-one trillion, eighty-six billion, seven hundred sixty-two million, two hundred seventy-three thousand, nine hundred three".