11378535197 has 2 divisors, whose sum is σ = 11378535198. Its totient is φ = 11378535196.

The previous prime is 11378535191. The next prime is 11378535269. The reversal of 11378535197 is 79153587311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8258083876 + 3120451321 = 90874^2 + 55861^2 .

It is a cyclic number.

It is not a de Polignac number, because 11378535197 - 2⁸ = 11378534941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11378535191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5689267598 + 5689267599.

It is an arithmetic number, because the mean of its divisors is an integer number (5689267599).

Almost surely, 2^11378535197 is an apocalyptic number.

It is an amenable number.

11378535197 is a deficient number, since it is larger than the sum of its proper divisors (1).

11378535197 is an equidigital number, since it uses as much as digits as its factorization.

11378535197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 50.

The spelling of 11378535197 in words is "eleven billion, three hundred seventy-eight million, five hundred thirty-five thousand, one hundred ninety-seven".