11543653311 has 16 divisors (see below), whose sum is σ = 15629996928. Its totient is φ = 7576668000.

The previous prime is 11543653309. The next prime is 11543653313. The reversal of 11543653311 is 11335634511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11543653309) and next prime (11543653313).

It is not a de Polignac number, because 11543653311 - 2¹ = 11543653309 is a prime.

It is a super-2 number, since 2×11543653311² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11543653313) 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, 366996 + ... + 397206.

It is an arithmetic number, because the mean of its divisors is an integer number (976874808).

Almost surely, 2^11543653311 is an apocalyptic number.

11543653311 is a deficient number, since it is larger than the sum of its proper divisors (4086343617).

11543653311 is a wasteful number, since it uses less digits than its factorization.

11543653311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32182.

The product of its digits is 16200, while the sum is 33.

The spelling of 11543653311 in words is "eleven billion, five hundred forty-three million, six hundred fifty-three thousand, three hundred eleven".