2601187616 has 36 divisors (see below), whose sum is σ = 5263325298. Its totient is φ = 1265421312.

The previous prime is 2601187597. The next prime is 2601187619. The reversal of 2601187616 is 6167811062.

It can be written as a sum of positive squares in 3 ways, for example, as 2363904400 + 237283216 = 48620^2 + 15404^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2601187616.

It is not an unprimeable number, because it can be changed into a prime (2601187619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14120 + ... + 73496.

Almost surely, 2^2601187616 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 2601187616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2631662649).

2601187616 is an abundant number, since it is smaller than the sum of its proper divisors (2662137682).

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

2601187616 is an equidigital number, since it uses as much as digits as its factorization.

2601187616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59461 (or 59416 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 2601187616 is about 51001.8393393807. The cubic root of 2601187616 is about 1375.2782010747.

Adding to 2601187616 its reverse (6167811062), we get a palindrome (8768998678).

The spelling of 2601187616 in words is "two billion, six hundred one million, one hundred eighty-seven thousand, six hundred sixteen".