943405670861 has 2 divisors, whose sum is σ = 943405670862. Its totient is φ = 943405670860.

The previous prime is 943405670839. The next prime is 943405670873. The reversal of 943405670861 is 168076504349.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 714413752900 + 228991917961 = 845230^2 + 478531^2 .

It is a cyclic number.

It is not a de Polignac number, because 943405670861 - 2⁶ = 943405670797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (943405670161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471702835430 + 471702835431.

It is an arithmetic number, because the mean of its divisors is an integer number (471702835431).

Almost surely, 2^943405670861 is an apocalyptic number.

It is an amenable number.

943405670861 is a deficient number, since it is larger than the sum of its proper divisors (1).

943405670861 is an equidigital number, since it uses as much as digits as its factorization.

943405670861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 943405670861 in words is "nine hundred forty-three billion, four hundred five million, six hundred seventy thousand, eight hundred sixty-one".