20512224479 has 2 divisors, whose sum is σ = 20512224480. Its totient is φ = 20512224478.

The previous prime is 20512224433. The next prime is 20512224503. The reversal of 20512224479 is 97442221502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20512224479 - 2¹⁶ = 20512158943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20512224409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10256112239 + 10256112240.

It is an arithmetic number, because the mean of its divisors is an integer number (10256112240).

Almost surely, 2^20512224479 is an apocalyptic number.

20512224479 is a deficient number, since it is larger than the sum of its proper divisors (1).

20512224479 is an equidigital number, since it uses as much as digits as its factorization.

20512224479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 20512224479 in words is "twenty billion, five hundred twelve million, two hundred twenty-four thousand, four hundred seventy-nine".