16371779503 has 2 divisors, whose sum is σ = 16371779504. Its totient is φ = 16371779502.

The previous prime is 16371779491. The next prime is 16371779521. The reversal of 16371779503 is 30597717361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16371779503 - 2⁵ = 16371779471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16371779563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8185889751 + 8185889752.

It is an arithmetic number, because the mean of its divisors is an integer number (8185889752).

Almost surely, 2^16371779503 is an apocalyptic number.

16371779503 is a deficient number, since it is larger than the sum of its proper divisors (1).

16371779503 is an equidigital number, since it uses as much as digits as its factorization.

16371779503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 833490, while the sum is 49.

The spelling of 16371779503 in words is "sixteen billion, three hundred seventy-one million, seven hundred seventy-nine thousand, five hundred three".