10823215987 has 4 divisors (see below), whose sum is σ = 11115735376. Its totient is φ = 10530696600.

The previous prime is 10823215849. The next prime is 10823216003. The reversal of 10823215987 is 78951232801.

It is a happy number.

10823215987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10823215987 - 2¹⁵ = 10823183219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10823215187) 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, 146259639 + ... + 146259712.

It is an arithmetic number, because the mean of its divisors is an integer number (2778933844).

Almost surely, 2^10823215987 is an apocalyptic number.

10823215987 is a deficient number, since it is larger than the sum of its proper divisors (292519389).

10823215987 is an equidigital number, since it uses as much as digits as its factorization.

10823215987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292519388.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 10823215987 in words is "ten billion, eight hundred twenty-three million, two hundred fifteen thousand, nine hundred eighty-seven".