11229520779 has 20 divisors (see below), whose sum is σ = 16782274080. Its totient is φ = 7483084560.

The previous prime is 11229520763. The next prime is 11229520781. The reversal of 11229520779 is 97702592211.

11229520779 is a `hidden beast` number, since 112 + 2 + 9 + 520 + 7 + 7 + 9 = 666.

It is not a de Polignac number, because 11229520779 - 2⁴ = 11229520763 is a prime.

It is a super-2 number, since 2×11229520779² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11229510779) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 164494 + ... + 222524.

It is an arithmetic number, because the mean of its divisors is an integer number (839113704).

Almost surely, 2^11229520779 is an apocalyptic number.

11229520779 is a deficient number, since it is larger than the sum of its proper divisors (5552753301).

11229520779 is an equidigital number, since it uses as much as digits as its factorization.

11229520779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60432 (or 60423 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The spelling of 11229520779 in words is "eleven billion, two hundred twenty-nine million, five hundred twenty thousand, seven hundred seventy-nine".