20503033087 has 2 divisors, whose sum is σ = 20503033088. Its totient is φ = 20503033086.

The previous prime is 20503033081. The next prime is 20503033099. The reversal of 20503033087 is 78033030502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20503033087 - 2²³ = 20494644479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20503033081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10251516543 + 10251516544.

It is an arithmetic number, because the mean of its divisors is an integer number (10251516544).

Almost surely, 2^20503033087 is an apocalyptic number.

20503033087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20503033087 is an equidigital number, since it uses as much as digits as its factorization.

20503033087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 31.

Adding to 20503033087 its reverse (78033030502), we get a palindrome (98536063589).

The spelling of 20503033087 in words is "twenty billion, five hundred three million, thirty-three thousand, eighty-seven".