16961786843 has 2 divisors, whose sum is σ = 16961786844. Its totient is φ = 16961786842.

The previous prime is 16961786833. The next prime is 16961786899. The reversal of 16961786843 is 34868716961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16961786843 - 2⁸ = 16961786587 is a prime.

It is not a weakly prime, because it can be changed into another prime (16961786833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8480893421 + 8480893422.

It is an arithmetic number, because the mean of its divisors is an integer number (8480893422).

Almost surely, 2^16961786843 is an apocalyptic number.

16961786843 is a deficient number, since it is larger than the sum of its proper divisors (1).

16961786843 is an equidigital number, since it uses as much as digits as its factorization.

16961786843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 59.

The spelling of 16961786843 in words is "sixteen billion, nine hundred sixty-one million, seven hundred eighty-six thousand, eight hundred forty-three".