11503156063 has 12 divisors (see below), whose sum is σ = 14168354112. Its totient is φ = 9279856320.

The previous prime is 11503156061. The next prime is 11503156117. The reversal of 11503156063 is 36065130511.

It is not a de Polignac number, because 11503156063 - 2¹ = 11503156061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11503156061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6903823 + ... + 6905488.

It is an arithmetic number, because the mean of its divisors is an integer number (1180696176).

Almost surely, 2^11503156063 is an apocalyptic number.

11503156063 is a deficient number, since it is larger than the sum of its proper divisors (2665198049).

11503156063 is a wasteful number, since it uses less digits than its factorization.

11503156063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13809342 (or 13809335 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 31.

Adding to 11503156063 its reverse (36065130511), we get a palindrome (47568286574).

The spelling of 11503156063 in words is "eleven billion, five hundred three million, one hundred fifty-six thousand, sixty-three".