21039147359 has 8 divisors (see below), whose sum is σ = 21363548160. Its totient is φ = 20716198776.

The previous prime is 21039147347. The next prime is 21039147361. The reversal of 21039147359 is 95374193012.

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 21039147359 - 2¹² = 21039143263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21039147559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333839 + ... + 391824.

It is an arithmetic number, because the mean of its divisors is an integer number (2670443520).

Almost surely, 2^21039147359 is an apocalyptic number.

21039147359 is a deficient number, since it is larger than the sum of its proper divisors (324400801).

21039147359 is an equidigital number, since it uses as much as digits as its factorization.

21039147359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726109.

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 21039147359 in words is "twenty-one billion, thirty-nine million, one hundred forty-seven thousand, three hundred fifty-nine".