11115205456 has 10 divisors (see below), whose sum is σ = 21535710602. Its totient is φ = 5557602720.

The previous prime is 11115205433. The next prime is 11115205573. The reversal of 11115205456 is 65450251111.

It can be written as a sum of positive squares in only one way, i.e., 7711649856 + 3403555600 = 87816^2 + 58340^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347350155 + ... + 347350186.

Almost surely, 2^11115205456 is an apocalyptic number.

11115205456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11115205456 is a deficient number, since it is larger than the sum of its proper divisors (10420505146).

11115205456 is an equidigital number, since it uses as much as digits as its factorization.

11115205456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694700349 (or 694700343 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 31.

Adding to 11115205456 its reverse (65450251111), we get a palindrome (76565456567).

The spelling of 11115205456 in words is "eleven billion, one hundred fifteen million, two hundred five thousand, four hundred fifty-six".