20054220479 has 2 divisors, whose sum is σ = 20054220480. Its totient is φ = 20054220478.

The previous prime is 20054220451. The next prime is 20054220499. The reversal of 20054220479 is 97402245002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20054220479 - 2⁸ = 20054220223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20054220499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10027110239 + 10027110240.

It is an arithmetic number, because the mean of its divisors is an integer number (10027110240).

Almost surely, 2^20054220479 is an apocalyptic number.

20054220479 is a deficient number, since it is larger than the sum of its proper divisors (1).

20054220479 is an equidigital number, since it uses as much as digits as its factorization.

20054220479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 20054220479 in words is "twenty billion, fifty-four million, two hundred twenty thousand, four hundred seventy-nine".