20620211479 has 4 divisors (see below), whose sum is σ = 23565955984. Its totient is φ = 17674466976.

The previous prime is 20620211477. The next prime is 20620211483. The reversal of 20620211479 is 97411202602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20620211479 - 2¹ = 20620211477 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 (20620211477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472872242 + ... + 1472872255.

It is an arithmetic number, because the mean of its divisors is an integer number (5891488996).

Almost surely, 2^20620211479 is an apocalyptic number.

20620211479 is a deficient number, since it is larger than the sum of its proper divisors (2945744505).

20620211479 is an equidigital number, since it uses as much as digits as its factorization.

20620211479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945744504.

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 20620211479 in words is "twenty billion, six hundred twenty million, two hundred eleven thousand, four hundred seventy-nine".