11258578217 has 2 divisors, whose sum is σ = 11258578218. Its totient is φ = 11258578216.

The previous prime is 11258578207. The next prime is 11258578237. The reversal of 11258578217 is 71287585211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8651046121 + 2607532096 = 93011^2 + 51064^2 .

It is a cyclic number.

It is not a de Polignac number, because 11258578217 - 2⁸ = 11258577961 is a prime.

It is not a weakly prime, because it can be changed into another prime (11258578207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5629289108 + 5629289109.

It is an arithmetic number, because the mean of its divisors is an integer number (5629289109).

Almost surely, 2^11258578217 is an apocalyptic number.

It is an amenable number.

11258578217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11258578217 is an equidigital number, since it uses as much as digits as its factorization.

11258578217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 313600, while the sum is 47.

The spelling of 11258578217 in words is "eleven billion, two hundred fifty-eight million, five hundred seventy-eight thousand, two hundred seventeen".