11181640533 has 16 divisors (see below), whose sum is σ = 17048303616. Its totient is φ = 6385903920.

The previous prime is 11181640531. The next prime is 11181640541. The reversal of 11181640533 is 33504618111.

It is not a de Polignac number, because 11181640533 - 2¹ = 11181640531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11181640494 and 11181640503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11181640531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111873 + ... + 186758.

It is an arithmetic number, because the mean of its divisors is an integer number (1065518976).

Almost surely, 2^11181640533 is an apocalyptic number.

It is an amenable number.

11181640533 is a deficient number, since it is larger than the sum of its proper divisors (5866663083).

11181640533 is a wasteful number, since it uses less digits than its factorization.

11181640533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300424.

The product of its (nonzero) digits is 8640, while the sum is 33.

The spelling of 11181640533 in words is "eleven billion, one hundred eighty-one million, six hundred forty thousand, five hundred thirty-three".