223260320642 has 18 divisors (see below), whose sum is σ = 336589969833. Its totient is φ = 111066515064.

The previous prime is 223260320627. The next prime is 223260320653. The reversal of 223260320642 is 246023062322.

It can be written as a sum of positive squares in 2 ways, for example, as 168082780441 + 55177540201 = 409979^2 + 234899^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=334111.

It is a super-3 number, since 3×223260320642³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 223260320599 and 223260320608.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 153022109 + ... + 153023567.

Almost surely, 2^223260320642 is an apocalyptic number.

223260320642 is a deficient number, since it is larger than the sum of its proper divisors (113329649191).

223260320642 is an frugal number, since it uses more digits than its factorization.

223260320642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378 (or 1690 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 32.

Multiplying 223260320642 by its sum of digits (32), we get a square (7144330260544 = 2672888²).

Adding to 223260320642 its reverse (246023062322), we get a palindrome (469283382964).

The spelling of 223260320642 in words is "two hundred twenty-three billion, two hundred sixty million, three hundred twenty thousand, six hundred forty-two".