3420521523535 has 16 divisors (see below), whose sum is σ = 4237101630720. Its totient is φ = 2648102872320.

The previous prime is 3420521523527. The next prime is 3420521523547. The reversal of 3420521523535 is 5353251250243.

It is not a de Polignac number, because 3420521523535 - 2³ = 3420521523527 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12197659 + ... + 12474931.

It is an arithmetic number, because the mean of its divisors is an integer number (264818851920).

Almost surely, 2^{3420521523535} is an apocalyptic number.

3420521523535 is a deficient number, since it is larger than the sum of its proper divisors (816580107185).

3420521523535 is a wasteful number, since it uses less digits than its factorization.

3420521523535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356898.

The product of its (nonzero) digits is 540000, while the sum is 40.

Adding to 3420521523535 its reverse (5353251250243), we get a palindrome (8773772773778).

The spelling of 3420521523535 in words is "three trillion, four hundred twenty billion, five hundred twenty-one million, five hundred twenty-three thousand, five hundred thirty-five".