1610870698321 has 2 divisors, whose sum is σ = 1610870698322. Its totient is φ = 1610870698320.

The previous prime is 1610870698319. The next prime is 1610870698361. The reversal of 1610870698321 is 1238960780161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1454399820225 + 156470878096 = 1205985^2 + 395564^2 .

It is a cyclic number.

It is not a de Polignac number, because 1610870698321 - 2¹ = 1610870698319 is a prime.

Together with 1610870698319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1610870698361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805435349160 + 805435349161.

It is an arithmetic number, because the mean of its divisors is an integer number (805435349161).

Almost surely, 2^{1610870698321} is an apocalyptic number.

It is an amenable number.

1610870698321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1610870698321 is an equidigital number, since it uses as much as digits as its factorization.

1610870698321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 1610870698321 in words is "one trillion, six hundred ten billion, eight hundred seventy million, six hundred ninety-eight thousand, three hundred twenty-one".