220671489391 has 2 divisors, whose sum is σ = 220671489392. Its totient is φ = 220671489390.

The previous prime is 220671489361. The next prime is 220671489403. The reversal of 220671489391 is 193984176022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220671489391 - 2¹⁷ = 220671358319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220671489341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110335744695 + 110335744696.

It is an arithmetic number, because the mean of its divisors is an integer number (110335744696).

Almost surely, 2^220671489391 is an apocalyptic number.

220671489391 is a deficient number, since it is larger than the sum of its proper divisors (1).

220671489391 is an equidigital number, since it uses as much as digits as its factorization.

220671489391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 220671489391 in words is "two hundred twenty billion, six hundred seventy-one million, four hundred eighty-nine thousand, three hundred ninety-one".