11217784051 has 8 divisors (see below), whose sum is σ = 11257783424. Its totient is φ = 11177844480.

The previous prime is 11217784037. The next prime is 11217784063. The reversal of 11217784051 is 15048771211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 8-Lehmer number, since φ(11217784051) divides (11217784051-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 11217784051 - 2⁹ = 11217783539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11217784051.

It is not an unprimeable number, because it can be changed into a prime (11217784351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379171 + ... + 407683.

It is an arithmetic number, because the mean of its divisors is an integer number (1407222928).

Almost surely, 2^11217784051 is an apocalyptic number.

11217784051 is the 61150-th hex number.

11217784051 is a deficient number, since it is larger than the sum of its proper divisors (39999373).

11217784051 is an equidigital number, since it uses as much as digits as its factorization.

11217784051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29901.

The product of its (nonzero) digits is 15680, while the sum is 37.

The spelling of 11217784051 in words is "eleven billion, two hundred seventeen million, seven hundred eighty-four thousand, fifty-one".