11503165153 has 4 divisors (see below), whose sum is σ = 11503392768. Its totient is φ = 11502937540.

The previous prime is 11503165147. The next prime is 11503165169. The reversal of 11503165153 is 35156130511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35156130511 = 613 ⋅57350947.

It is a cyclic number.

It is not a de Polignac number, because 11503165153 - 2¹³ = 11503156961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11503168153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193 + ... + 151678.

It is an arithmetic number, because the mean of its divisors is an integer number (2875848192).

Almost surely, 2^11503165153 is an apocalyptic number.

It is an amenable number.

11503165153 is a deficient number, since it is larger than the sum of its proper divisors (227615).

11503165153 is an equidigital number, since it uses as much as digits as its factorization.

11503165153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227614.

The product of its (nonzero) digits is 6750, while the sum is 31.

Adding to 11503165153 its reverse (35156130511), we get a palindrome (46659295664).

The spelling of 11503165153 in words is "eleven billion, five hundred three million, one hundred sixty-five thousand, one hundred fifty-three".