11540023563 has 16 divisors (see below), whose sum is σ = 16287448320. Its totient is φ = 7255313184.

The previous prime is 11540023543. The next prime is 11540023571. The reversal of 11540023563 is 36532004511.

It is not a de Polignac number, because 11540023563 - 2⁹ = 11540023051 is a prime.

It is a super-3 number, since 3×11540023563³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11540023563.

It is not an unprimeable number, because it can be changed into a prime (11540023543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1538631 + ... + 1546112.

It is an arithmetic number, because the mean of its divisors is an integer number (1017965520).

Almost surely, 2^11540023563 is an apocalyptic number.

11540023563 is a deficient number, since it is larger than the sum of its proper divisors (4747424757).

11540023563 is a wasteful number, since it uses less digits than its factorization.

11540023563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084818.

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 11540023563 in words is "eleven billion, five hundred forty million, twenty-three thousand, five hundred sixty-three".