11137811197 has 2 divisors, whose sum is σ = 11137811198. Its totient is φ = 11137811196.

The previous prime is 11137811183. The next prime is 11137811207. The reversal of 11137811197 is 79111873111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5717023321 + 5420787876 = 75611^2 + 73626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11137811197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11137811107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5568905598 + 5568905599.

It is an arithmetic number, because the mean of its divisors is an integer number (5568905599).

Almost surely, 2^11137811197 is an apocalyptic number.

It is an amenable number.

11137811197 is a deficient number, since it is larger than the sum of its proper divisors (1).

11137811197 is an equidigital number, since it uses as much as digits as its factorization.

11137811197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 40.

The spelling of 11137811197 in words is "eleven billion, one hundred thirty-seven million, eight hundred eleven thousand, one hundred ninety-seven".