220300616642 has 6 divisors (see below), whose sum is σ = 330451920633. Its totient is φ = 110149976432.

The previous prime is 220300616633. The next prime is 220300616647. The reversal of 220300616642 is 246616003022.

220300616642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 138509764561 + 81790852081 = 372169^2 + 285991^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=331889.

It is a super-3 number, since 3×220300616642³ (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 = 220300616599 and 220300616608.

It is not an unprimeable number, because it can be changed into a prime (220300616647) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 497834 + ... + 829722.

Almost surely, 2^220300616642 is an apocalyptic number.

220300616642 is a deficient number, since it is larger than the sum of its proper divisors (110151303991).

220300616642 is an frugal number, since it uses more digits than its factorization.

220300616642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663780 (or 331891 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

Multiplying 220300616642 by its sum of digits (32), we get a square (7049619732544 = 2655112²).

Adding to 220300616642 its reverse (246616003022), we get a palindrome (466916619664).

The spelling of 220300616642 in words is "two hundred twenty billion, three hundred million, six hundred sixteen thousand, six hundred forty-two".