1969623450043 has 2 divisors, whose sum is σ = 1969623450044. Its totient is φ = 1969623450042.

The previous prime is 1969623449953. The next prime is 1969623450077. The reversal of 1969623450043 is 3400543269691.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1969623450043 is a prime.

It is not a weakly prime, because it can be changed into another prime (1969623450083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 984811725021 + 984811725022.

It is an arithmetic number, because the mean of its divisors is an integer number (984811725022).

Almost surely, 2^{1969623450043} is an apocalyptic number.

1969623450043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1969623450043 is an equidigital number, since it uses as much as digits as its factorization.

1969623450043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 52.

The spelling of 1969623450043 in words is "one trillion, nine hundred sixty-nine billion, six hundred twenty-three million, four hundred fifty thousand, forty-three".