220826642450 has 18 divisors (see below), whose sum is σ = 410743735551. Its totient is φ = 88329327840.

The previous prime is 220826642437. The next prime is 220826642489. The reversal of 220826642450 is 54246628022.

It can be written as a sum of positive squares in 5 ways, for example, as 21517075969 + 199309566481 = 146687^2 + 446441^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=332285.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220826642398 and 220826642407.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3289622 + ... + 3356078.

Almost surely, 2^220826642450 is an apocalyptic number.

220826642450 is a deficient number, since it is larger than the sum of its proper divisors (189917093101).

220826642450 is an frugal number, since it uses more digits than its factorization.

220826642450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132926 (or 66464 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 41.

The spelling of 220826642450 in words is "two hundred twenty billion, eight hundred twenty-six million, six hundred forty-two thousand, four hundred fifty".