11155400305 has 8 divisors (see below), whose sum is σ = 15298834752. Its totient is φ = 7649417328.

The previous prime is 11155400299. The next prime is 11155400309. The reversal of 11155400305 is 50300455111.

It is a happy number.

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

It is not a de Polignac number, because 11155400305 - 2⁹ = 11155399793 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 11155400305.

It is not an unprimeable number, because it can be changed into a prime (11155400309) 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, 159362827 + ... + 159362896.

It is an arithmetic number, because the mean of its divisors is an integer number (1912354344).

Almost surely, 2^11155400305 is an apocalyptic number.

It is an amenable number.

11155400305 is a deficient number, since it is larger than the sum of its proper divisors (4143434447).

11155400305 is an equidigital number, since it uses as much as digits as its factorization.

11155400305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318725735.

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 11155400305 its reverse (50300455111), we get a palindrome (61455855416).

The spelling of 11155400305 in words is "eleven billion, one hundred fifty-five million, four hundred thousand, three hundred five".