20368485503 has 2 divisors, whose sum is σ = 20368485504. Its totient is φ = 20368485502.

The previous prime is 20368485413. The next prime is 20368485509. The reversal of 20368485503 is 30558486302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20368485503 - 2²⁶ = 20301376639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20368485509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10184242751 + 10184242752.

It is an arithmetic number, because the mean of its divisors is an integer number (10184242752).

Almost surely, 2^20368485503 is an apocalyptic number.

20368485503 is a deficient number, since it is larger than the sum of its proper divisors (1).

20368485503 is an equidigital number, since it uses as much as digits as its factorization.

20368485503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 20368485503 in words is "twenty billion, three hundred sixty-eight million, four hundred eighty-five thousand, five hundred three".