20044460477 has 2 divisors, whose sum is σ = 20044460478. Its totient is φ = 20044460476.

The previous prime is 20044460441. The next prime is 20044460483. The reversal of 20044460477 is 77406444002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16947092761 + 3097367716 = 130181^2 + 55654^2 .

It is a cyclic number.

It is not a de Polignac number, because 20044460477 - 2²⁰ = 20043411901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20044460477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20044460677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10022230238 + 10022230239.

It is an arithmetic number, because the mean of its divisors is an integer number (10022230239).

Almost surely, 2^20044460477 is an apocalyptic number.

It is an amenable number.

20044460477 is a deficient number, since it is larger than the sum of its proper divisors (1).

20044460477 is an equidigital number, since it uses as much as digits as its factorization.

20044460477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150528, while the sum is 38.

The spelling of 20044460477 in words is "twenty billion, forty-four million, four hundred sixty thousand, four hundred seventy-seven".