3561116943 has 8 divisors (see below), whose sum is σ = 4775602608. Its totient is φ = 2360354624.

The previous prime is 3561116929. The next prime is 3561116983. The reversal of 3561116943 is 3496111653.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3561116943 - 2⁹ = 3561116431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561116983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3430230 + ... + 3431267.

It is an arithmetic number, because the mean of its divisors is an integer number (596950326).

Almost surely, 2^3561116943 is an apocalyptic number.

3561116943 is a deficient number, since it is larger than the sum of its proper divisors (1214485665).

3561116943 is a wasteful number, since it uses less digits than its factorization.

3561116943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6861673.

The product of its digits is 58320, while the sum is 39.

The square root of 3561116943 is about 59675.0948302556. The cubic root of 3561116943 is about 1527.0810171237.

The spelling of 3561116943 in words is "three billion, five hundred sixty-one million, one hundred sixteen thousand, nine hundred forty-three".