11668187563 has 2 divisors, whose sum is σ = 11668187564. Its totient is φ = 11668187562.

The previous prime is 11668187549. The next prime is 11668187579. The reversal of 11668187563 is 36578186611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11668187563 - 2³³ = 3078252971 is a prime.

It is a super-2 number, since 2×11668187563² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11668187563.

It is not a weakly prime, because it can be changed into another prime (11668187593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5834093781 + 5834093782.

It is an arithmetic number, because the mean of its divisors is an integer number (5834093782).

Almost surely, 2^11668187563 is an apocalyptic number.

11668187563 is a deficient number, since it is larger than the sum of its proper divisors (1).

11668187563 is an equidigital number, since it uses as much as digits as its factorization.

11668187563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 52.

The spelling of 11668187563 in words is "eleven billion, six hundred sixty-eight million, one hundred eighty-seven thousand, five hundred sixty-three".