11255566605 has 8 divisors (see below), whose sum is σ = 18008906592. Its totient is φ = 6002968848.

The previous prime is 11255566591. The next prime is 11255566657. The reversal of 11255566605 is 50666555211.

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

It is not a de Polignac number, because 11255566605 - 2⁴ = 11255566589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375185539 + ... + 375185568.

It is an arithmetic number, because the mean of its divisors is an integer number (2251113324).

Almost surely, 2^11255566605 is an apocalyptic number.

11255566605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11255566605 is a deficient number, since it is larger than the sum of its proper divisors (6753339987).

11255566605 is an equidigital number, since it uses as much as digits as its factorization.

11255566605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750371115.

The product of its (nonzero) digits is 270000, while the sum is 42.

The spelling of 11255566605 in words is "eleven billion, two hundred fifty-five million, five hundred sixty-six thousand, six hundred five".