2220345440641 has 4 divisors (see below), whose sum is σ = 2220478947652. Its totient is φ = 2220211933632.

The previous prime is 2220345440639. The next prime is 2220345440659. The reversal of 2220345440641 is 1460445430222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1321269786225 + 899075654416 = 1149465^2 + 948196^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220345440641 - 2¹ = 2220345440639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2220345440641.

It is not an unprimeable number, because it can be changed into a prime (2220345441641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66728556 + ... + 66761821.

It is an arithmetic number, because the mean of its divisors is an integer number (555119736913).

Almost surely, 2^{2220345440641} is an apocalyptic number.

It is an amenable number.

2220345440641 is a deficient number, since it is larger than the sum of its proper divisors (133507011).

2220345440641 is a wasteful number, since it uses less digits than its factorization.

2220345440641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133507010.

The product of its (nonzero) digits is 184320, while the sum is 37.

The spelling of 2220345440641 in words is "two trillion, two hundred twenty billion, three hundred forty-five million, four hundred forty thousand, six hundred forty-one".