11005555509979 has 8 divisors (see below), whose sum is σ = 11170325576768. Its totient is φ = 10840800385800.

The previous prime is 11005555509967. The next prime is 11005555510013. The reversal of 11005555509979 is 97990555550011.

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

It is a cyclic number.

It is not a de Polignac number, because 11005555509979 - 2¹¹ = 11005555507931 is a prime.

It is a super-2 number, since 2×11005555509979² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11005555509079) 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, 2247177 + ... + 5202010.

It is an arithmetic number, because the mean of its divisors is an integer number (1396290697096).

Almost surely, 2^{11005555509979} is an apocalyptic number.

11005555509979 is a deficient number, since it is larger than the sum of its proper divisors (164770066789).

11005555509979 is an equidigital number, since it uses as much as digits as its factorization.

11005555509979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7471305.

The product of its (nonzero) digits is 15946875, while the sum is 61.

The spelling of 11005555509979 in words is "eleven trillion, five billion, five hundred fifty-five million, five hundred nine thousand, nine hundred seventy-nine".