11157317550571 has 2 divisors, whose sum is σ = 11157317550572. Its totient is φ = 11157317550570.

The previous prime is 11157317550559. The next prime is 11157317550661. The reversal of 11157317550571 is 17505571375111.

11157317550571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11157317550571 - 2²⁹ = 11156780679659 is a prime.

It is not a weakly prime, because it can be changed into another prime (11157317550271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5578658775285 + 5578658775286.

It is an arithmetic number, because the mean of its divisors is an integer number (5578658775286).

Almost surely, 2^{11157317550571} is an apocalyptic number.

11157317550571 is a deficient number, since it is larger than the sum of its proper divisors (1).

11157317550571 is an equidigital number, since it uses as much as digits as its factorization.

11157317550571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 643125, while the sum is 49.

The spelling of 11157317550571 in words is "eleven trillion, one hundred fifty-seven billion, three hundred seventeen million, five hundred fifty thousand, five hundred seventy-one".