215144502442434 has 24 divisors (see below), whose sum is σ = 493566799721580. Its totient is φ = 67496314491648.

The previous prime is 215144502442393. The next prime is 215144502442459. The reversal of 215144502442434 is 434244205441512.

215144502442434 is a `hidden beast` number, since 2 + 1 + 5 + 144 + 50 + 2 + 4 + 424 + 34 = 666.

215144502442434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 205196944141809 + 9947558300625 = 14324697^2 + 3153975^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 215144502442434.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 351543304339 + ... + 351543304950.

Almost surely, 2^{215144502442434} is an apocalyptic number.

215144502442434 is an abundant number, since it is smaller than the sum of its proper divisors (278422297279146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215144502442434 is a wasteful number, since it uses less digits than its factorization.

215144502442434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703086609314 (or 703086609311 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 45.

Adding to 215144502442434 its reverse (434244205441512), we get a palindrome (649388707883946).

The spelling of 215144502442434 in words is "two hundred fifteen trillion, one hundred forty-four billion, five hundred two million, four hundred forty-two thousand, four hundred thirty-four".