2355601440209 has 2 divisors, whose sum is σ = 2355601440210. Its totient is φ = 2355601440208.

The previous prime is 2355601440131. The next prime is 2355601440221. The reversal of 2355601440209 is 9020441065532.

2355601440209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1645247459584 + 710353980625 = 1282672^2 + 842825^2 .

It is a cyclic number.

It is not a de Polignac number, because 2355601440209 - 2¹² = 2355601436113 is a prime.

It is a super-2 number, since 2×2355601440209² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2355601440109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177800720104 + 1177800720105.

It is an arithmetic number, because the mean of its divisors is an integer number (1177800720105).

Almost surely, 2^{2355601440209} is an apocalyptic number.

It is an amenable number.

2355601440209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2355601440209 is an equidigital number, since it uses as much as digits as its factorization.

2355601440209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 2355601440209 in words is "two trillion, three hundred fifty-five billion, six hundred one million, four hundred forty thousand, two hundred nine".