212453303553 has 12 divisors (see below), whose sum is σ = 306881017300. Its totient is φ = 141633678816.

The previous prime is 212453303527. The next prime is 212453303581. The reversal of 212453303553 is 355303354212.

212453303553 is a `hidden beast` number, since 2 + 1 + 24 + 53 + 30 + 3 + 553 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39324079809 + 173129223744 = 198303^2 + 416088^2 .

It is not a de Polignac number, because 212453303553 - 2⁸ = 212453303297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212453303653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1140423 + ... + 1313571.

Almost surely, 2^212453303553 is an apocalyptic number.

It is an amenable number.

212453303553 is a deficient number, since it is larger than the sum of its proper divisors (94427713747).

212453303553 is a wasteful number, since it uses less digits than its factorization.

212453303553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309488 (or 309485 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 36.

Adding to 212453303553 its reverse (355303354212), we get a palindrome (567756657765).

The spelling of 212453303553 in words is "two hundred twelve billion, four hundred fifty-three million, three hundred three thousand, five hundred fifty-three".