21098445319 has 8 divisors (see below), whose sum is σ = 24153591168. Its totient is φ = 18053570040.

The previous prime is 21098445299. The next prime is 21098445331. The reversal of 21098445319 is 91354489012.

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 21098445319 - 2¹³ = 21098437127 is a prime.

It is a super-2 number, since 2×21098445319² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21098445419) 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, 2563237 + ... + 2571454.

It is an arithmetic number, because the mean of its divisors is an integer number (3019198896).

Almost surely, 2^21098445319 is an apocalyptic number.

21098445319 is a deficient number, since it is larger than the sum of its proper divisors (3055145849).

21098445319 is an equidigital number, since it uses as much as digits as its factorization.

21098445319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5135285.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 21098445319 in words is "twenty-one billion, ninety-eight million, four hundred forty-five thousand, three hundred nineteen".