21089678150 has 24 divisors (see below), whose sum is σ = 39230678064. Its totient is φ = 8435037600.

The previous prime is 21089678143. The next prime is 21089678237. The reversal of 21089678150 is 5187698012.

It is a junction number, because it is equal to n+sod(n) for n = 21089678095 and 21089678104.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 852455 + ... + 876845.

It is an arithmetic number, because the mean of its divisors is an integer number (1634611586).

Almost surely, 2^21089678150 is an apocalyptic number.

21089678150 is a deficient number, since it is larger than the sum of its proper divisors (18140999914).

21089678150 is a wasteful number, since it uses less digits than its factorization.

21089678150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41696 (or 41691 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 47.

The spelling of 21089678150 in words is "twenty-one billion, eighty-nine million, six hundred seventy-eight thousand, one hundred fifty".