11540554775 has 12 divisors (see below), whose sum is σ = 14511843504. Its totient is φ = 9102408000.

The previous prime is 11540554747. The next prime is 11540554777. The reversal of 11540554775 is 57745504511.

It is not a de Polignac number, because 11540554775 - 2¹⁶ = 11540489239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11540554777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3249086 + ... + 3252635.

It is an arithmetic number, because the mean of its divisors is an integer number (1209320292).

Almost surely, 2^11540554775 is an apocalyptic number.

11540554775 is a deficient number, since it is larger than the sum of its proper divisors (2971288729).

11540554775 is an equidigital number, since it uses as much as digits as its factorization.

11540554775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6501802 (or 6501797 counting only the distinct ones).

The product of its (nonzero) digits is 490000, while the sum is 44.

The spelling of 11540554775 in words is "eleven billion, five hundred forty million, five hundred fifty-four thousand, seven hundred seventy-five".