1306512220405 has 16 divisors (see below), whose sum is σ = 1794106191744. Its totient is φ = 894735092160.

The previous prime is 1306512220393. The next prime is 1306512220417. The reversal of 1306512220405 is 5040222156031.

It is an interprime number because it is at equal distance from previous prime (1306512220393) and next prime (1306512220417).

It is not a de Polignac number, because 1306512220405 - 2¹⁵ = 1306512187637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 24118431 + ... + 24172540.

It is an arithmetic number, because the mean of its divisors is an integer number (112131636984).

Almost surely, 2^{1306512220405} is an apocalyptic number.

It is an amenable number.

1306512220405 is a deficient number, since it is larger than the sum of its proper divisors (487593971339).

1306512220405 is an equidigital number, since it uses as much as digits as its factorization.

1306512220405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48291756.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 1306512220405 its reverse (5040222156031), we get a palindrome (6346734376436).

The spelling of 1306512220405 in words is "one trillion, three hundred six billion, five hundred twelve million, two hundred twenty thousand, four hundred five".