16780715683 has 2 divisors, whose sum is σ = 16780715684. Its totient is φ = 16780715682.

The previous prime is 16780715671. The next prime is 16780715737. The reversal of 16780715683 is 38651708761.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16780715683 - 2¹³ = 16780707491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16780715683.

It is not a weakly prime, because it can be changed into another prime (16780725683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8390357841 + 8390357842.

It is an arithmetic number, because the mean of its divisors is an integer number (8390357842).

Almost surely, 2^16780715683 is an apocalyptic number.

16780715683 is a deficient number, since it is larger than the sum of its proper divisors (1).

16780715683 is an equidigital number, since it uses as much as digits as its factorization.

16780715683 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 16780715683 in words is "sixteen billion, seven hundred eighty million, seven hundred fifteen thousand, six hundred eighty-three".