3601522012564 has 72 divisors (see below), whose sum is σ = 7535114026440. Its totient is φ = 1500737704704.

The previous prime is 3601522012549. The next prime is 3601522012567. The reversal of 3601522012564 is 4652102251063.

It can be written as a sum of positive squares in 4 ways, for example, as 71106488964 + 3530415523600 = 266658^2 + 1878940^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3601522012567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10189342 + ... + 10536874.

Almost surely, 2^{3601522012564} 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 3601522012564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3767557013220).

3601522012564 is an abundant number, since it is smaller than the sum of its proper divisors (3933592013876).

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

3601522012564 is a wasteful number, since it uses less digits than its factorization.

3601522012564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349017 (or 349008 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 3601522012564 in words is "three trillion, six hundred one billion, five hundred twenty-two million, twelve thousand, five hundred sixty-four".