20215104445603 has 2 divisors, whose sum is σ = 20215104445604. Its totient is φ = 20215104445602.

The previous prime is 20215104445597. The next prime is 20215104445607. The reversal of 20215104445603 is 30654440151202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20215104445603 is a prime.

It is not a weakly prime, because it can be changed into another prime (20215104445607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10107552222801 + 10107552222802.

It is an arithmetic number, because the mean of its divisors is an integer number (10107552222802).

Almost surely, 2^{20215104445603} is an apocalyptic number.

20215104445603 is a deficient number, since it is larger than the sum of its proper divisors (1).

20215104445603 is an equidigital number, since it uses as much as digits as its factorization.

20215104445603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 20215104445603 its reverse (30654440151202), we get a palindrome (50869544596805).

The spelling of 20215104445603 in words is "twenty trillion, two hundred fifteen billion, one hundred four million, four hundred forty-five thousand, six hundred three".