21150830489 has 8 divisors (see below), whose sum is σ = 21420759360. Its totient is φ = 20881261296.

The previous prime is 21150830473. The next prime is 21150830501. The reversal of 21150830489 is 98403805112.

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 21150830489 - 2⁴ = 21150830473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21150836489) 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, 29444 + ... + 207770.

It is an arithmetic number, because the mean of its divisors is an integer number (2677594920).

Almost surely, 2^21150830489 is an apocalyptic number.

It is an amenable number.

21150830489 is a deficient number, since it is larger than the sum of its proper divisors (269928871).

21150830489 is a wasteful number, since it uses less digits than its factorization.

21150830489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179839.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 21150830489 in words is "twenty-one billion, one hundred fifty million, eight hundred thirty thousand, four hundred eighty-nine".