16361618848657 has 2 divisors, whose sum is σ = 16361618848658. Its totient is φ = 16361618848656.

The previous prime is 16361618848649. The next prime is 16361618848669. The reversal of 16361618848657 is 75684881616361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14030747943696 + 2330870904961 = 3745764^2 + 1526719^2 .

It is a cyclic number.

It is not a de Polignac number, because 16361618848657 - 2³ = 16361618848649 is a prime.

It is not a weakly prime, because it can be changed into another prime (16361618848607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8180809424328 + 8180809424329.

It is an arithmetic number, because the mean of its divisors is an integer number (8180809424329).

Almost surely, 2^{16361618848657} is an apocalyptic number.

It is an amenable number.

16361618848657 is a deficient number, since it is larger than the sum of its proper divisors (1).

16361618848657 is an equidigital number, since it uses as much as digits as its factorization.

16361618848657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 278691840, while the sum is 70.

The spelling of 16361618848657 in words is "sixteen trillion, three hundred sixty-one billion, six hundred eighteen million, eight hundred forty-eight thousand, six hundred fifty-seven".