12642045602205 has 16 divisors (see below), whose sum is σ = 20412844277760. Its totient is φ = 6680567216448.

The previous prime is 12642045602149. The next prime is 12642045602213. The reversal of 12642045602205 is 50220654024621.

It is not a de Polignac number, because 12642045602205 - 2⁷ = 12642045602077 is a prime.

It is a super-2 number, since 2×12642045602205² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3866067357 + ... + 3866070626.

It is an arithmetic number, because the mean of its divisors is an integer number (1275802767360).

Almost surely, 2^{12642045602205} is an apocalyptic number.

12642045602205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12642045602205 is a deficient number, since it is larger than the sum of its proper divisors (7770798675555).

12642045602205 is a wasteful number, since it uses less digits than its factorization.

12642045602205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7732138100.

The product of its (nonzero) digits is 230400, while the sum is 39.

Adding to 12642045602205 its reverse (50220654024621), we get a palindrome (62862699626826).

The spelling of 12642045602205 in words is "twelve trillion, six hundred forty-two billion, forty-five million, six hundred two thousand, two hundred five".