21034342415244 has 12 divisors (see below), whose sum is σ = 49080132302264. Its totient is φ = 7011447471744.

The previous prime is 21034342415197. The next prime is 21034342415357. The reversal of 21034342415244 is 44251424343012.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876430933957 + ... + 876430933980.

Almost surely, 2^{21034342415244} is an apocalyptic number.

It is an amenable number.

21034342415244 is an abundant number, since it is smaller than the sum of its proper divisors (28045789887020).

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

21034342415244 is a wasteful number, since it uses less digits than its factorization.

21034342415244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752861867944 (or 1752861867942 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 39.

Adding to 21034342415244 its reverse (44251424343012), we get a palindrome (65285766758256).

The spelling of 21034342415244 in words is "twenty-one trillion, thirty-four billion, three hundred forty-two million, four hundred fifteen thousand, two hundred forty-four".