20340444200903 has 2 divisors, whose sum is σ = 20340444200904. Its totient is φ = 20340444200902.

The previous prime is 20340444200891. The next prime is 20340444200929. The reversal of 20340444200903 is 30900244404302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20340444200903 - 2³² = 20336149233607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20340444230903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10170222100451 + 10170222100452.

It is an arithmetic number, because the mean of its divisors is an integer number (10170222100452).

Almost surely, 2^{20340444200903} is an apocalyptic number.

20340444200903 is a deficient number, since it is larger than the sum of its proper divisors (1).

20340444200903 is an equidigital number, since it uses as much as digits as its factorization.

20340444200903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 35.

The spelling of 20340444200903 in words is "twenty trillion, three hundred forty billion, four hundred forty-four million, two hundred thousand, nine hundred three".