11503416155 has 72 divisors (see below), whose sum is σ = 17760281616. Its totient is φ = 7126331520.

The previous prime is 11503416151. The next prime is 11503416179. The reversal of 11503416155 is 55161430511.

It is not a de Polignac number, because 11503416155 - 2² = 11503416151 is a prime.

It is a super-2 number, since 2×11503416155² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11503416151) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5127464 + ... + 5129706.

It is an arithmetic number, because the mean of its divisors is an integer number (246670578).

Almost surely, 2^11503416155 is an apocalyptic number.

11503416155 is a deficient number, since it is larger than the sum of its proper divisors (6256865461).

11503416155 is a wasteful number, since it uses less digits than its factorization.

11503416155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457 (or 2439 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

Adding to 11503416155 its reverse (55161430511), we get a palindrome (66664846666).

The spelling of 11503416155 in words is "eleven billion, five hundred three million, four hundred sixteen thousand, one hundred fifty-five".