11551543442411 has 12 divisors (see below), whose sum is σ = 13495181447592. Its totient is φ = 9858827992608.

The previous prime is 11551543442399. The next prime is 11551543442471. The reversal of 11551543442411 is 11424434515511.

It is not a de Polignac number, because 11551543442411 - 2¹⁰ = 11551543441387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11551543442471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 505880825 + ... + 505903658.

It is an arithmetic number, because the mean of its divisors is an integer number (1124598453966).

Almost surely, 2^{11551543442411} is an apocalyptic number.

11551543442411 is a deficient number, since it is larger than the sum of its proper divisors (1943638005181).

11551543442411 is a wasteful number, since it uses less digits than its factorization.

11551543442411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011784730 (or 1011784723 counting only the distinct ones).

The product of its digits is 192000, while the sum is 41.

Adding to 11551543442411 its reverse (11424434515511), we get a palindrome (22975977957922).

The spelling of 11551543442411 in words is "eleven trillion, five hundred fifty-one billion, five hundred forty-three million, four hundred forty-two thousand, four hundred eleven".