11661298087 has 8 divisors (see below), whose sum is σ = 12351830400. Its totient is φ = 10971273984.

The previous prime is 11661298063. The next prime is 11661298171. The reversal of 11661298087 is 78089216611.

11661298087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11661298087 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 11661298087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661298007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79287 + ... + 172072.

It is an arithmetic number, because the mean of its divisors is an integer number (1543978800).

Almost surely, 2^11661298087 is an apocalyptic number.

11661298087 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11661298087 is a deficient number, since it is larger than the sum of its proper divisors (690532313).

11661298087 is a wasteful number, since it uses less digits than its factorization.

11661298087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254105.

The product of its (nonzero) digits is 290304, while the sum is 49.

The spelling of 11661298087 in words is "eleven billion, six hundred sixty-one million, two hundred ninety-eight thousand, eighty-seven".