11972728283 has 4 divisors (see below), whose sum is σ = 12264746088. Its totient is φ = 11680710480.

The previous prime is 11972728247. The next prime is 11972728289. The reversal of 11972728283 is 38282727911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11972728283 - 2⁶ = 11972728219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11972728289) 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, 146008841 + ... + 146008922.

It is an arithmetic number, because the mean of its divisors is an integer number (3066186522).

Almost surely, 2^11972728283 is an apocalyptic number.

11972728283 is a deficient number, since it is larger than the sum of its proper divisors (292017805).

11972728283 is an equidigital number, since it uses as much as digits as its factorization.

11972728283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292017804.

The product of its digits is 677376, while the sum is 50.

The spelling of 11972728283 in words is "eleven billion, nine hundred seventy-two million, seven hundred twenty-eight thousand, two hundred eighty-three".