21830980549 has 8 divisors (see below), whose sum is σ = 25754521088. Its totient is φ = 18108647280.

The previous prime is 21830980543. The next prime is 21830980571. The reversal of 21830980549 is 94508903812.

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 21830980549 - 2²³ = 21822591941 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 (21830980543) 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, 50301582 + ... + 50302015.

It is an arithmetic number, because the mean of its divisors is an integer number (3219315136).

Almost surely, 2^21830980549 is an apocalyptic number.

It is an amenable number.

21830980549 is a deficient number, since it is larger than the sum of its proper divisors (3923540539).

21830980549 is a wasteful number, since it uses less digits than its factorization.

21830980549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100603635.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 21830980549 in words is "twenty-one billion, eight hundred thirty million, nine hundred eighty thousand, five hundred forty-nine".