11040345511 has 24 divisors (see below), whose sum is σ = 12145219520. Its totient is φ = 9974869632.

The previous prime is 11040345499. The next prime is 11040345517. The reversal of 11040345511 is 11554304011.

It is not a de Polignac number, because 11040345511 - 2⁷ = 11040345383 is a prime.

It is a super-2 number, since 2×11040345511² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11040345517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39856705 + ... + 39856981.

Almost surely, 2^11040345511 is an apocalyptic number.

11040345511 is a deficient number, since it is larger than the sum of its proper divisors (1104874009).

11040345511 is an equidigital number, since it uses as much as digits as its factorization.

11040345511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 11040345511 its reverse (11554304011), we get a palindrome (22594649522).

The spelling of 11040345511 in words is "eleven billion, forty million, three hundred forty-five thousand, five hundred eleven".