20879166919 has 8 divisors (see below), whose sum is σ = 22820858480. Its totient is φ = 18985418496.

The previous prime is 20879166911. The next prime is 20879166967. The reversal of 20879166919 is 91966197802.

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 20879166919 - 2³ = 20879166911 is a prime.

It is a super-2 number, since 2×20879166919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20879166911) 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, 11984874 + ... + 11986615.

It is an arithmetic number, because the mean of its divisors is an integer number (2852607310).

Almost surely, 2^20879166919 is an apocalyptic number.

20879166919 is a deficient number, since it is larger than the sum of its proper divisors (1941691561).

20879166919 is a wasteful number, since it uses less digits than its factorization.

20879166919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23971569.

The product of its (nonzero) digits is 2939328, while the sum is 58.

The spelling of 20879166919 in words is "twenty billion, eight hundred seventy-nine million, one hundred sixty-six thousand, nine hundred nineteen".