11554045511 has 2 divisors, whose sum is σ = 11554045512. Its totient is φ = 11554045510.

The previous prime is 11554045501. The next prime is 11554045541.

11554045511 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11554045511 is a prime.

It is a super-2 number, since 2×11554045511² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11554045501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777022755 + 5777022756.

It is an arithmetic number, because the mean of its divisors is an integer number (5777022756).

Almost surely, 2^11554045511 is an apocalyptic number.

11554045511 is a deficient number, since it is larger than the sum of its proper divisors (1).

11554045511 is an equidigital number, since it uses as much as digits as its factorization.

11554045511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10000, while the sum is 32.

It can be divided in two parts, 115540 and 45511, that added together give a 5-th power (161051 = 11⁵).

The spelling of 11554045511 in words is "eleven billion, five hundred fifty-four million, forty-five thousand, five hundred eleven".