11272187533 has 4 divisors (see below), whose sum is σ = 11276229088. Its totient is φ = 11268145980.

The previous prime is 11272187491. The next prime is 11272187557. The reversal of 11272187533 is 33578127211.

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: 33578127211 = 107 ⋅313814273.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11272187533 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 (11272187833) 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, 2016591 + ... + 2022172.

It is an arithmetic number, because the mean of its divisors is an integer number (2819057272).

Almost surely, 2^11272187533 is an apocalyptic number.

It is an amenable number.

11272187533 is a deficient number, since it is larger than the sum of its proper divisors (4041555).

11272187533 is an equidigital number, since it uses as much as digits as its factorization.

11272187533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4041554.

The product of its digits is 70560, while the sum is 40.

The spelling of 11272187533 in words is "eleven billion, two hundred seventy-two million, one hundred eighty-seven thousand, five hundred thirty-three".