220140336656 has 20 divisors (see below), whose sum is σ = 451611426492. Its totient is φ = 103595452416.

The previous prime is 220140336617. The next prime is 220140336667. The reversal of 220140336656 is 656633041022.

It is a happy number.

220140336656 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 157199562256 + 62940774400 = 396484^2 + 250880^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404669465 + ... + 404670008.

Almost surely, 2^220140336656 is an apocalyptic number.

It is an amenable number.

220140336656 is an abundant number, since it is smaller than the sum of its proper divisors (231471089836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220140336656 is a wasteful number, since it uses less digits than its factorization.

220140336656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809339498 (or 809339492 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

Adding to 220140336656 its reverse (656633041022), we get a palindrome (876773377678).

The spelling of 220140336656 in words is "two hundred twenty billion, one hundred forty million, three hundred thirty-six thousand, six hundred fifty-six".