11557048213 has 2 divisors, whose sum is σ = 11557048214. Its totient is φ = 11557048212.

The previous prime is 11557048159. The next prime is 11557048229. The reversal of 11557048213 is 31284075511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6691567204 + 4865481009 = 81802^2 + 69753^2 .

It is a cyclic number.

It is not a de Polignac number, because 11557048213 - 2⁹ = 11557047701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11557048513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5778524106 + 5778524107.

It is an arithmetic number, because the mean of its divisors is an integer number (5778524107).

Almost surely, 2^11557048213 is an apocalyptic number.

It is an amenable number.

11557048213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11557048213 is an equidigital number, since it uses as much as digits as its factorization.

11557048213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 11557048213 in words is "eleven billion, five hundred fifty-seven million, forty-eight thousand, two hundred thirteen".