220993611593 has 2 divisors, whose sum is σ = 220993611594. Its totient is φ = 220993611592.

The previous prime is 220993611589. The next prime is 220993611599. The reversal of 220993611593 is 395116399022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213174277264 + 7819334329 = 461708^2 + 88427^2 .

It is a cyclic number.

It is not a de Polignac number, because 220993611593 - 2² = 220993611589 is a prime.

It is not a weakly prime, because it can be changed into another prime (220993611599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110496805796 + 110496805797.

It is an arithmetic number, because the mean of its divisors is an integer number (110496805797).

Almost surely, 2^220993611593 is an apocalyptic number.

It is an amenable number.

220993611593 is a deficient number, since it is larger than the sum of its proper divisors (1).

220993611593 is an equidigital number, since it uses as much as digits as its factorization.

220993611593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 787320, while the sum is 50.

The spelling of 220993611593 in words is "two hundred twenty billion, nine hundred ninety-three million, six hundred eleven thousand, five hundred ninety-three".