220645496449 has 8 divisors (see below), whose sum is σ = 252177634368. Its totient is φ = 189116196720.

The previous prime is 220645496447. The next prime is 220645496483. The reversal of 220645496449 is 944694546022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220645496449 - 2¹ = 220645496447 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 220645496449.

It is not an unprimeable number, because it can be changed into a prime (220645496441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540262 + ... + 856255.

It is an arithmetic number, because the mean of its divisors is an integer number (31522204296).

Almost surely, 2^220645496449 is an apocalyptic number.

It is an amenable number.

220645496449 is a deficient number, since it is larger than the sum of its proper divisors (31532137919).

220645496449 is a wasteful number, since it uses less digits than its factorization.

220645496449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419095.

The product of its (nonzero) digits is 14929920, while the sum is 55.

The spelling of 220645496449 in words is "two hundred twenty billion, six hundred forty-five million, four hundred ninety-six thousand, four hundred forty-nine".