13721382503 has 2 divisors, whose sum is σ = 13721382504. Its totient is φ = 13721382502.

The previous prime is 13721382497. The next prime is 13721382581. The reversal of 13721382503 is 30528312731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13721382503 - 2²⁸ = 13452947047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13721381503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6860691251 + 6860691252.

It is an arithmetic number, because the mean of its divisors is an integer number (6860691252).

Almost surely, 2^13721382503 is an apocalyptic number.

13721382503 is a deficient number, since it is larger than the sum of its proper divisors (1).

13721382503 is an equidigital number, since it uses as much as digits as its factorization.

13721382503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 13721382503 in words is "thirteen billion, seven hundred twenty-one million, three hundred eighty-two thousand, five hundred three".