11540155203 has 12 divisors (see below), whose sum is σ = 17649649368. Its totient is φ = 7240881600.

The previous prime is 11540155189. The next prime is 11540155247. The reversal of 11540155203 is 30255104511.

11540155203 is a `hidden beast` number, since 1 + 1 + 5 + 401 + 55 + 203 = 666.

It is not a de Polignac number, because 11540155203 - 2¹² = 11540151107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11540155303) 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 11 ways as a sum of consecutive naturals, for example, 37712773 + ... + 37713078.

It is an arithmetic number, because the mean of its divisors is an integer number (1470804114).

Almost surely, 2^11540155203 is an apocalyptic number.

11540155203 is a deficient number, since it is larger than the sum of its proper divisors (6109494165).

11540155203 is a wasteful number, since it uses less digits than its factorization.

11540155203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75425874 (or 75425871 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 11540155203 its reverse (30255104511), we get a palindrome (41795259714).

The spelling of 11540155203 in words is "eleven billion, five hundred forty million, one hundred fifty-five thousand, two hundred three".