11143340511554 has 16 divisors (see below), whose sum is σ = 16737977989656. Its totient is φ = 5564017536000.

The previous prime is 11143340511521. The next prime is 11143340511643. The reversal of 11143340511554 is 45511504334111.

It can be written as a sum of positive squares in 4 ways, for example, as 3558025830529 + 7585314681025 = 1886273^2 + 2754145^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6649454 + ... + 8154870.

Almost surely, 2^{11143340511554} is an apocalyptic number.

11143340511554 is a deficient number, since it is larger than the sum of its proper divisors (5594637478102).

11143340511554 is a wasteful number, since it uses less digits than its factorization.

11143340511554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510501.

The product of its (nonzero) digits is 72000, while the sum is 38.

Adding to 11143340511554 its reverse (45511504334111), we get a palindrome (56654844845665).

The spelling of 11143340511554 in words is "eleven trillion, one hundred forty-three billion, three hundred forty million, five hundred eleven thousand, five hundred fifty-four".