11663878903 has 2 divisors, whose sum is σ = 11663878904. Its totient is φ = 11663878902.

The previous prime is 11663878883. The next prime is 11663879021. The reversal of 11663878903 is 30987836611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11663878903 - 2²¹ = 11661781751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11660878903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5831939451 + 5831939452.

It is an arithmetic number, because the mean of its divisors is an integer number (5831939452).

Almost surely, 2^11663878903 is an apocalyptic number.

11663878903 is a deficient number, since it is larger than the sum of its proper divisors (1).

11663878903 is an equidigital number, since it uses as much as digits as its factorization.

11663878903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 11663878903 in words is "eleven billion, six hundred sixty-three million, eight hundred seventy-eight thousand, nine hundred three".