2455638063868 has 12 divisors (see below), whose sum is σ = 4688036303832. Its totient is φ = 1116199119920.

The previous prime is 2455638063811. The next prime is 2455638063869. The reversal of 2455638063868 is 8683608365542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2455638063869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27904977955 + ... + 27904978042.

It is an arithmetic number, because the mean of its divisors is an integer number (390669691986).

Almost surely, 2^{2455638063868} is an apocalyptic number.

It is an amenable number.

2455638063868 is a deficient number, since it is larger than the sum of its proper divisors (2232398239964).

2455638063868 is a wasteful number, since it uses less digits than its factorization.

2455638063868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55809956012 (or 55809956010 counting only the distinct ones).

The product of its (nonzero) digits is 199065600, while the sum is 64.

The spelling of 2455638063868 in words is "two trillion, four hundred fifty-five billion, six hundred thirty-eight million, sixty-three thousand, eight hundred sixty-eight".