3521434520340 has 72 divisors (see below), whose sum is σ = 11652746964768. Its totient is φ = 853681095360.

The previous prime is 3521434520339. The next prime is 3521434520347. The reversal of 3521434520340 is 430254341253.

3521434520340 is a `hidden beast` number, since 3 + 52 + 1 + 43 + 4 + 520 + 3 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 3521434520295 and 3521434520304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521434520347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 889249162 + ... + 889253121.

It is an arithmetic number, because the mean of its divisors is an integer number (161843707844).

Almost surely, 2^{3521434520340} is an apocalyptic number.

3521434520340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3521434520340 is an abundant number, since it is smaller than the sum of its proper divisors (8131312444428).

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

3521434520340 is a wasteful number, since it uses less digits than its factorization.

3521434520340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778502309 (or 1778502304 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 3521434520340 its reverse (430254341253), we get a palindrome (3951688861593).

The spelling of 3521434520340 in words is "three trillion, five hundred twenty-one billion, four hundred thirty-four million, five hundred twenty thousand, three hundred forty".