418190086661 has 2 divisors, whose sum is σ = 418190086662. Its totient is φ = 418190086660.

The previous prime is 418190086649. The next prime is 418190086667. The reversal of 418190086661 is 166680091814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329138574436 + 89051512225 = 573706^2 + 298415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-418190086661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (418190086667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209095043330 + 209095043331.

It is an arithmetic number, because the mean of its divisors is an integer number (209095043331).

Almost surely, 2^418190086661 is an apocalyptic number.

It is an amenable number.

418190086661 is a deficient number, since it is larger than the sum of its proper divisors (1).

418190086661 is an equidigital number, since it uses as much as digits as its factorization.

418190086661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 497664, while the sum is 50.

The spelling of 418190086661 in words is "four hundred eighteen billion, one hundred ninety million, eighty-six thousand, six hundred sixty-one".