11557381541 has 16 divisors (see below), whose sum is σ = 12948802560. Its totient is φ = 10251025920.

The previous prime is 11557381499. The next prime is 11557381547. The reversal of 11557381541 is 14518375511.

It is not a de Polignac number, because 11557381541 - 2¹⁰ = 11557380517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11557381547) 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 in 15 ways as a sum of consecutive naturals, for example, 31976 + ... + 155361.

It is an arithmetic number, because the mean of its divisors is an integer number (809300160).

Almost surely, 2^11557381541 is an apocalyptic number.

It is an amenable number.

11557381541 is a deficient number, since it is larger than the sum of its proper divisors (1391421019).

11557381541 is a wasteful number, since it uses less digits than its factorization.

11557381541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187564.

The product of its digits is 84000, while the sum is 41.

The spelling of 11557381541 in words is "eleven billion, five hundred fifty-seven million, three hundred eighty-one thousand, five hundred forty-one".