20939835219 has 8 divisors (see below), whose sum is σ = 27969373632. Its totient is φ = 13935093480.

The previous prime is 20939835211. The next prime is 20939835227. The reversal of 20939835219 is 91253893902.

It is an interprime number because it is at equal distance from previous prime (20939835211) and next prime (20939835227).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20939835219 - 2³ = 20939835211 is a prime.

It is a super-2 number, since 2×20939835219² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20939835211) 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, 6197197 + ... + 6200574.

It is an arithmetic number, because the mean of its divisors is an integer number (3496171704).

Almost surely, 2^20939835219 is an apocalyptic number.

20939835219 is a deficient number, since it is larger than the sum of its proper divisors (7029538413).

20939835219 is a wasteful number, since it uses less digits than its factorization.

20939835219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12398337.

The product of its (nonzero) digits is 1049760, while the sum is 51.

The spelling of 20939835219 in words is "twenty billion, nine hundred thirty-nine million, eight hundred thirty-five thousand, two hundred nineteen".