11551638583 has 2 divisors, whose sum is σ = 11551638584. Its totient is φ = 11551638582.

The previous prime is 11551638569. The next prime is 11551638617. The reversal of 11551638583 is 38583615511.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11551638583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11551638083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5775819291 + 5775819292.

It is an arithmetic number, because the mean of its divisors is an integer number (5775819292).

Almost surely, 2^11551638583 is an apocalyptic number.

11551638583 is a deficient number, since it is larger than the sum of its proper divisors (1).

11551638583 is an equidigital number, since it uses as much as digits as its factorization.

11551638583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432000, while the sum is 46.

The spelling of 11551638583 in words is "eleven billion, five hundred fifty-one million, six hundred thirty-eight thousand, five hundred eighty-three".