220471938593 has 2 divisors, whose sum is σ = 220471938594. Its totient is φ = 220471938592.

The previous prime is 220471938539. The next prime is 220471938613. The reversal of 220471938593 is 395839174022.

Together with previous prime (220471938539) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111507909184 + 108964029409 = 333928^2 + 330097^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220471938593 is a prime.

It is not a weakly prime, because it can be changed into another prime (220471938293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110235969296 + 110235969297.

It is an arithmetic number, because the mean of its divisors is an integer number (110235969297).

Almost surely, 2^220471938593 is an apocalyptic number.

It is an amenable number.

220471938593 is a deficient number, since it is larger than the sum of its proper divisors (1).

220471938593 is an equidigital number, since it uses as much as digits as its factorization.

220471938593 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 220471938593 in words is "two hundred twenty billion, four hundred seventy-one million, nine hundred thirty-eight thousand, five hundred ninety-three".