16780063903 has 2 divisors, whose sum is σ = 16780063904. Its totient is φ = 16780063902.

The previous prime is 16780063847. The next prime is 16780064009. The reversal of 16780063903 is 30936008761.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16780063903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16780063903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16780063403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8390031951 + 8390031952.

It is an arithmetic number, because the mean of its divisors is an integer number (8390031952).

Almost surely, 2^16780063903 is an apocalyptic number.

16780063903 is a deficient number, since it is larger than the sum of its proper divisors (1).

16780063903 is an equidigital number, since it uses as much as digits as its factorization.

16780063903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 16780063903 in words is "sixteen billion, seven hundred eighty million, sixty-three thousand, nine hundred three".