11155900987 has 8 divisors (see below), whose sum is σ = 13908655872. Its totient is φ = 8692909800.

The previous prime is 11155900957. The next prime is 11155901039. The reversal of 11155900987 is 78900955111.

11155900987 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 not a de Polignac number, because 11155900987 - 2¹¹ = 11155898939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11155900907) 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, 72440839 + ... + 72440992.

It is an arithmetic number, because the mean of its divisors is an integer number (1738581984).

Almost surely, 2^11155900987 is an apocalyptic number.

11155900987 is a deficient number, since it is larger than the sum of its proper divisors (2752754885).

11155900987 is a wasteful number, since it uses less digits than its factorization.

11155900987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144881849.

The product of its (nonzero) digits is 113400, while the sum is 46.

The spelling of 11155900987 in words is "eleven billion, one hundred fifty-five million, nine hundred thousand, nine hundred eighty-seven".