15330798649 has 4 divisors (see below), whose sum is σ = 15997355136. Its totient is φ = 14664242164.

The previous prime is 15330798631. The next prime is 15330798653. The reversal of 15330798649 is 94689703351.

15330798649 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94689703351 = 20333 ⋅4656947.

It is a cyclic number.

It is not a de Polignac number, because 15330798649 - 2⁷ = 15330798521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15330798649.

It is not an unprimeable number, because it can be changed into a prime (15330798619) 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, 333278209 + ... + 333278254.

It is an arithmetic number, because the mean of its divisors is an integer number (3999338784).

Almost surely, 2^15330798649 is an apocalyptic number.

It is an amenable number.

15330798649 is a deficient number, since it is larger than the sum of its proper divisors (666556487).

15330798649 is an equidigital number, since it uses as much as digits as its factorization.

15330798649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666556486.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 15330798649 in words is "fifteen billion, three hundred thirty million, seven hundred ninety-eight thousand, six hundred forty-nine".