20040164503 has 2 divisors, whose sum is σ = 20040164504. Its totient is φ = 20040164502.

The previous prime is 20040164461. The next prime is 20040164531. The reversal of 20040164503 is 30546104002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20040164503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20040164593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10020082251 + 10020082252.

It is an arithmetic number, because the mean of its divisors is an integer number (10020082252).

Almost surely, 2^20040164503 is an apocalyptic number.

20040164503 is a deficient number, since it is larger than the sum of its proper divisors (1).

20040164503 is an equidigital number, since it uses as much as digits as its factorization.

20040164503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20040164503 its reverse (30546104002), we get a palindrome (50586268505).

The spelling of 20040164503 in words is "twenty billion, forty million, one hundred sixty-four thousand, five hundred three".