6161844217 has 2 divisors, whose sum is σ = 6161844218. Its totient is φ = 6161844216.

The previous prime is 6161844193. The next prime is 6161844251. The reversal of 6161844217 is 7124481616.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5846284521 + 315559696 = 76461^2 + 17764^2 .

It is a cyclic number.

It is not a de Polignac number, because 6161844217 - 2¹⁹ = 6161319929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6161844217.

It is not a weakly prime, because it can be changed into another prime (6161844817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3080922108 + 3080922109.

It is an arithmetic number, because the mean of its divisors is an integer number (3080922109).

Almost surely, 2^6161844217 is an apocalyptic number.

It is an amenable number.

6161844217 is a deficient number, since it is larger than the sum of its proper divisors (1).

6161844217 is an equidigital number, since it uses as much as digits as its factorization.

6161844217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 40.

The square root of 6161844217 is about 78497.4153523541. The cubic root of 6161844217 is about 1833.3142104856.

The spelling of 6161844217 in words is "six billion, one hundred sixty-one million, eight hundred forty-four thousand, two hundred seventeen".