220520809919 has 2 divisors, whose sum is σ = 220520809920. Its totient is φ = 220520809918.

The previous prime is 220520809897. The next prime is 220520809963. The reversal of 220520809919 is 919908025022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220520809919 - 2³⁶ = 151801333183 is a prime.

It is a super-2 number, since 2×220520809919² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220520809519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110260404959 + 110260404960.

It is an arithmetic number, because the mean of its divisors is an integer number (110260404960).

Almost surely, 2^220520809919 is an apocalyptic number.

220520809919 is a deficient number, since it is larger than the sum of its proper divisors (1).

220520809919 is an equidigital number, since it uses as much as digits as its factorization.

220520809919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 220520809919 in words is "two hundred twenty billion, five hundred twenty million, eight hundred nine thousand, nine hundred nineteen".