2305404123245 has 8 divisors (see below), whose sum is σ = 2861880980760. Its totient is φ = 1780725943360.

The previous prime is 2305404123229. The next prime is 2305404123271. The reversal of 2305404123245 is 5423214045032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38133106729 + 2267271016516 = 195277^2 + 1505746^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2305404123245 - 2⁴ = 2305404123229 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 7949669246 + ... + 7949669535.

It is an arithmetic number, because the mean of its divisors is an integer number (357735122595).

Almost surely, 2^{2305404123245} is an apocalyptic number.

It is an amenable number.

2305404123245 is a deficient number, since it is larger than the sum of its proper divisors (556476857515).

2305404123245 is a wasteful number, since it uses less digits than its factorization.

2305404123245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15899338815.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 2305404123245 its reverse (5423214045032), we get a palindrome (7728618168277).

The spelling of 2305404123245 in words is "two trillion, three hundred five billion, four hundred four million, one hundred twenty-three thousand, two hundred forty-five".