11583508997 has 2 divisors, whose sum is σ = 11583508998. Its totient is φ = 11583508996.

The previous prime is 11583508961. The next prime is 11583509029. The reversal of 11583508997 is 79980538511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7603665601 + 3979843396 = 87199^2 + 63086^2 .

It is an emirp because it is prime and its reverse (79980538511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11583508997 - 2¹² = 11583504901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11583508397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5791754498 + 5791754499.

It is an arithmetic number, because the mean of its divisors is an integer number (5791754499).

Almost surely, 2^11583508997 is an apocalyptic number.

It is an amenable number.

11583508997 is a deficient number, since it is larger than the sum of its proper divisors (1).

11583508997 is an equidigital number, since it uses as much as digits as its factorization.

11583508997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2721600, while the sum is 56.

The spelling of 11583508997 in words is "eleven billion, five hundred eighty-three million, five hundred eight thousand, nine hundred ninety-seven".