11141171897 has 2 divisors, whose sum is σ = 11141171898. Its totient is φ = 11141171896.

The previous prime is 11141171893. The next prime is 11141171959. The reversal of 11141171897 is 79817114111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11122022521 + 19149376 = 105461^2 + 4376^2 .

It is a cyclic number.

It is not a de Polignac number, because 11141171897 - 2² = 11141171893 is a prime.

It is a super-2 number, since 2×11141171897² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11141171891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5570585948 + 5570585949.

It is an arithmetic number, because the mean of its divisors is an integer number (5570585949).

Almost surely, 2^11141171897 is an apocalyptic number.

It is an amenable number.

11141171897 is a deficient number, since it is larger than the sum of its proper divisors (1).

11141171897 is an equidigital number, since it uses as much as digits as its factorization.

11141171897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 41.

The spelling of 11141171897 in words is "eleven billion, one hundred forty-one million, one hundred seventy-one thousand, eight hundred ninety-seven".