3601121560 has 128 divisors (see below), whose sum is σ = 8753832000. Its totient is φ = 1328431104.

The previous prime is 3601121551. The next prime is 3601121591. The reversal of 3601121560 is 651211063.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9501451 + ... + 9501829.

Almost surely, 2^3601121560 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 3601121560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4376916000).

3601121560 is an abundant number, since it is smaller than the sum of its proper divisors (5152710440).

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

3601121560 is a wasteful number, since it uses less digits than its factorization.

3601121560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 3601121560 is about 60009.3456054971. The cubic root of 3601121560 is about 1532.7780078925.

The spelling of 3601121560 in words is "three billion, six hundred one million, one hundred twenty-one thousand, five hundred sixty".