220645496452 has 24 divisors (see below), whose sum is σ = 398756572760. Its totient is φ = 106747994880.

The previous prime is 220645496447. The next prime is 220645496483. The reversal of 220645496452 is 254694546022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22757532736 + 197887963716 = 150856^2 + 444846^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220645496396 and 220645496405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4091577 + ... + 4145152.

Almost surely, 2^220645496452 is an apocalyptic number.

It is an amenable number.

220645496452 is a deficient number, since it is larger than the sum of its proper divisors (178111076308).

220645496452 is a wasteful number, since it uses less digits than its factorization.

220645496452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8236951 (or 8236949 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 49.

The spelling of 220645496452 in words is "two hundred twenty billion, six hundred forty-five million, four hundred ninety-six thousand, four hundred fifty-two".