20223008639 has 2 divisors, whose sum is σ = 20223008640. Its totient is φ = 20223008638.

The previous prime is 20223008593. The next prime is 20223008657. The reversal of 20223008639 is 93680032202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20223008639 - 2²⁸ = 19954573183 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20223008599 and 20223008608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20223008339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111504319 + 10111504320.

It is an arithmetic number, because the mean of its divisors is an integer number (10111504320).

Almost surely, 2^20223008639 is an apocalyptic number.

20223008639 is a deficient number, since it is larger than the sum of its proper divisors (1).

20223008639 is an equidigital number, since it uses as much as digits as its factorization.

20223008639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 20223008639 in words is "twenty billion, two hundred twenty-three million, eight thousand, six hundred thirty-nine".