220471938539 has 2 divisors, whose sum is σ = 220471938540. Its totient is φ = 220471938538.

The previous prime is 220471938521. The next prime is 220471938593. The reversal of 220471938539 is 935839174022.

Together with next prime (220471938593) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220471938539 - 2⁸ = 220471938283 is a prime.

It is not a weakly prime, because it can be changed into another prime (220471932539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110235969269 + 110235969270.

It is an arithmetic number, because the mean of its divisors is an integer number (110235969270).

Almost surely, 2^220471938539 is an apocalyptic number.

220471938539 is a deficient number, since it is larger than the sum of its proper divisors (1).

220471938539 is an equidigital number, since it uses as much as digits as its factorization.

220471938539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 220471938539 in words is "two hundred twenty billion, four hundred seventy-one million, nine hundred thirty-eight thousand, five hundred thirty-nine".