20995042132903 has 2 divisors, whose sum is σ = 20995042132904. Its totient is φ = 20995042132902.

The previous prime is 20995042132879. The next prime is 20995042132931. The reversal of 20995042132903 is 30923124059902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20995042132903 - 2⁴¹ = 18796018877351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20995042132703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10497521066451 + 10497521066452.

It is an arithmetic number, because the mean of its divisors is an integer number (10497521066452).

Almost surely, 2^{20995042132903} is an apocalyptic number.

20995042132903 is a deficient number, since it is larger than the sum of its proper divisors (1).

20995042132903 is an equidigital number, since it uses as much as digits as its factorization.

20995042132903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The spelling of 20995042132903 in words is "twenty trillion, nine hundred ninety-five billion, forty-two million, one hundred thirty-two thousand, nine hundred three".