20614228447 has 2 divisors, whose sum is σ = 20614228448. Its totient is φ = 20614228446.

The previous prime is 20614228409. The next prime is 20614228451. The reversal of 20614228447 is 74482241602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20614228447 - 2⁷ = 20614228319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20614228457) 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 as a sum of consecutive naturals, namely, 10307114223 + 10307114224.

It is an arithmetic number, because the mean of its divisors is an integer number (10307114224).

Almost surely, 2^20614228447 is an apocalyptic number.

20614228447 is a deficient number, since it is larger than the sum of its proper divisors (1).

20614228447 is an equidigital number, since it uses as much as digits as its factorization.

20614228447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172032, while the sum is 40.

The spelling of 20614228447 in words is "twenty billion, six hundred fourteen million, two hundred twenty-eight thousand, four hundred forty-seven".