3520723302144 has 216 divisors, whose sum is σ = 10481572413312. Its totient is φ = 1135391662080.

The previous prime is 3520723302139. The next prime is 3520723302197. The reversal of 3520723302144 is 4412033270253.

3520723302144 is a `hidden beast` number, since 3 + 5 + 207 + 2 + 3 + 302 + 144 = 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 = 3520723302099 and 3520723302108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 448324522 + ... + 448332374.

Almost surely, 2^{3520723302144} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3520723302144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5240786206656).

3520723302144 is an abundant number, since it is smaller than the sum of its proper divisors (6960849111168).

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

3520723302144 is a wasteful number, since it uses less digits than its factorization.

3520723302144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14183 (or 14166 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 36.

Adding to 3520723302144 its reverse (4412033270253), we get a palindrome (7932756572397).

The spelling of 3520723302144 in words is "three trillion, five hundred twenty billion, seven hundred twenty-three million, three hundred two thousand, one hundred forty-four".