11550699890 has 8 divisors (see below), whose sum is σ = 20791259820. Its totient is φ = 4620279952.

The previous prime is 11550699883. The next prime is 11550699899. The reversal of 11550699890 is 9899605511.

11550699890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10188277969 + 1362421921 = 100937^2 + 36911^2 .

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

It is not an unprimeable number, because it can be changed into a prime (11550699899) 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 3 ways as a sum of consecutive naturals, for example, 577534985 + ... + 577535004.

Almost surely, 2^11550699890 is an apocalyptic number.

11550699890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11550699890 is a deficient number, since it is larger than the sum of its proper divisors (9240559930).

11550699890 is a wasteful number, since it uses less digits than its factorization.

11550699890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155069996.

The product of its (nonzero) digits is 874800, while the sum is 53.

The spelling of 11550699890 in words is "eleven billion, five hundred fifty million, six hundred ninety-nine thousand, eight hundred ninety".