20620423969 has 8 divisors (see below), whose sum is σ = 20876177952. Its totient is φ = 20364844320.

The previous prime is 20620423939. The next prime is 20620423981. The reversal of 20620423969 is 96932402602.

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 20620423969 - 2⁵ = 20620423937 is a prime.

It is a super-2 number, since 2×20620423969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20620423939) 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, 203034 + ... + 287164.

It is an arithmetic number, because the mean of its divisors is an integer number (2609522244).

Almost surely, 2^20620423969 is an apocalyptic number.

It is an amenable number.

20620423969 is a deficient number, since it is larger than the sum of its proper divisors (255753983).

20620423969 is an equidigital number, since it uses as much as digits as its factorization.

20620423969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87167.

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 20620423969 in words is "twenty billion, six hundred twenty million, four hundred twenty-three thousand, nine hundred sixty-nine".