11011642511 has 2 divisors, whose sum is σ = 11011642512. Its totient is φ = 11011642510.

The previous prime is 11011642501. The next prime is 11011642567. The reversal of 11011642511 is 11524611011.

It is a weak prime.

It is an emirp because it is prime and its reverse (11524611011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11011642511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011642501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505821255 + 5505821256.

It is an arithmetic number, because the mean of its divisors is an integer number (5505821256).

Almost surely, 2^11011642511 is an apocalyptic number.

11011642511 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011642511 is an equidigital number, since it uses as much as digits as its factorization.

11011642511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 23.

The spelling of 11011642511 in words is "eleven billion, eleven million, six hundred forty-two thousand, five hundred eleven".