601500061609 has 2 divisors, whose sum is σ = 601500061610. Its totient is φ = 601500061608.

The previous prime is 601500061607. The next prime is 601500061697. The reversal of 601500061609 is 906160005106.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320642460009 + 280857601600 = 566253^2 + 529960^2 .

It is a cyclic number.

It is not a de Polignac number, because 601500061609 - 2¹ = 601500061607 is a prime.

Together with 601500061607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (601500061607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300750030804 + 300750030805.

It is an arithmetic number, because the mean of its divisors is an integer number (300750030805).

Almost surely, 2^601500061609 is an apocalyptic number.

It is an amenable number.

601500061609 is a deficient number, since it is larger than the sum of its proper divisors (1).

601500061609 is an equidigital number, since it uses as much as digits as its factorization.

601500061609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 601500061609 in words is "six hundred one billion, five hundred million, sixty-one thousand, six hundred nine".