11161220360 has 16 divisors (see below), whose sum is σ = 25112745900. Its totient is φ = 4464488128.

The previous prime is 11161220351. The next prime is 11161220383. The reversal of 11161220360 is 6302216111.

It can be written as a sum of positive squares in 2 ways, for example, as 11159387044 + 1833316 = 105638^2 + 1354^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 139515215 + ... + 139515294.

Almost surely, 2^11161220360 is an apocalyptic number.

11161220360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11161220360 is an abundant number, since it is smaller than the sum of its proper divisors (13951525540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11161220360 is a wasteful number, since it uses less digits than its factorization.

11161220360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279030520 (or 279030516 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11161220360 its reverse (6302216111), we get a palindrome (17463436471).

The spelling of 11161220360 in words is "eleven billion, one hundred sixty-one million, two hundred twenty thousand, three hundred sixty".