11117507197 has 4 divisors (see below), whose sum is σ = 11376053920. Its totient is φ = 10858960476.

The previous prime is 11117507129. The next prime is 11117507201. The reversal of 11117507197 is 79170571111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79170571111 = 449 ⋅176326439.

It is a cyclic number.

It is not a de Polignac number, because 11117507197 - 2¹⁵ = 11117474429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115507197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129273297 + ... + 129273382.

It is an arithmetic number, because the mean of its divisors is an integer number (2844013480).

Almost surely, 2^11117507197 is an apocalyptic number.

It is an amenable number.

11117507197 is a deficient number, since it is larger than the sum of its proper divisors (258546723).

11117507197 is an equidigital number, since it uses as much as digits as its factorization.

11117507197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258546722.

The product of its (nonzero) digits is 15435, while the sum is 40.

The spelling of 11117507197 in words is "eleven billion, one hundred seventeen million, five hundred seven thousand, one hundred ninety-seven".