11271511215563 has 2 divisors, whose sum is σ = 11271511215564. Its totient is φ = 11271511215562.

The previous prime is 11271511215499. The next prime is 11271511215593. The reversal of 11271511215563 is 36551211517211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11271511215563 - 2⁶ = 11271511215499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11271511215563.

It is not a weakly prime, because it can be changed into another prime (11271511215593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5635755607781 + 5635755607782.

It is an arithmetic number, because the mean of its divisors is an integer number (5635755607782).

Almost surely, 2^{11271511215563} is an apocalyptic number.

11271511215563 is a deficient number, since it is larger than the sum of its proper divisors (1).

11271511215563 is an equidigital number, since it uses as much as digits as its factorization.

11271511215563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 41.

The spelling of 11271511215563 in words is "eleven trillion, two hundred seventy-one billion, five hundred eleven million, two hundred fifteen thousand, five hundred sixty-three".